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Balance declines with age, but exercise can help stave off some of the risk of falling

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/evan-papa-1433146">Evan Papa</a>, <a href="https://theconversation.com/institutions/tufts-university-1024">Tufts University</a> My wife and I were in the grocery store recently when we noticed an older woman reaching above her head for some produce. As she stretched out her hand, she lost her balance and began falling forward. Fortunately, she leaned into her grocery cart, which prevented her from falling to the ground. Each year, about <a href="https://www.cdc.gov/mmwr/volumes/65/wr/mm6537a2.htm">1 in every 4 older adults experience a fall</a>. In fact, falls are the leading cause of injuries in adults ages 65 and older. Falls are the <a href="https://doi.org/10.1007/bf00298717">most common cause of hip fractures</a> and <a href="https://doi.org/10.1111/j.1553-2712.2000.tb00515.x">traumatic brain injuries</a>. Injuries like those are also <a href="https://doi.org/10.1056/NEJM199710303371806">risk factors for placement in a nursing home</a>, where the fall risk is <a href="https://doi.org/10.7326/0003-4819-121-6-199409150-00009">nearly three times higher than for people living in the community</a>. A number of physical changes with aging often go unseen preceding falls, including muscle weakness, decreased balance and changes in vision. I am a <a href="https://facultyprofiles.tufts.edu/evan-papa">physical therapist</a> and <a href="https://scholar.google.com/citations?user=T9B_dHQAAAAJ&hl=en">clinical scientist focused on fall prevention</a> in older adults, commonly ages 65 and older. I’ve spent most of my career investigating why older adults fall and working with patients and their families to prevent falls. <h2>Why aging leads to increased risk of falls</h2> Aging is a process that affects the systems and tissues of every person. The rate and magnitude of aging may be different for each person, but overall physical decline is an inevitable part of life. Most people think aging starts in their 60s, but in fact we spend most of our life span <a href="https://doi.org/10.1093%2Fgeront%2Fgnv130">undergoing the process of decline</a>, typically beginning in our 30s. Older adults are more prone to falling for various reasons, including age-related changes in their bodies and vision changes that leave them vulnerable to environmental factors such as curbs, stairs and carpet folds. <figure><iframe src="https://www.youtube.com/embed/ztPbKP68P2Q?wmode=transparent&start=24" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption>Some straightforward measures to improve the safety of the home environment for older adults can significantly lower the risk of falls.</figcaption></figure> Based on my experience, here are some common reasons older adults may experience falls: First, <a href="https://my.clevelandclinic.org/health/diseases/23167-sarcopenia">aging leads to a natural loss of muscle strength</a> and flexibility, making it more challenging to maintain balance and stability. The loss of strength and poor balance are two of the most common causes of falls. Second, older adults often have chronic conditions such as arthritis, Parkinson’s disease or diabetes that can affect their mobility, coordination and overall stability. In addition, certain medications commonly taken by older adults, <a href="https://doi.org/10.4088/jcp.18f12340">such as sedatives</a> or <a href="https://doi.org/10.1001/jamainternmed.2013.14764">blood pressure drugs</a>, can cause dizziness, drowsiness or a drop in blood pressure, leading to an increased risk of falls. Age-related vision changes, such as reduced depth perception and peripheral vision and difficulty in differentiating colors or contrasts, can make it harder to navigate and identify potential hazards. Hazards in the environment, such as uneven surfaces, slippery floors, inadequate lighting, loose rugs or carpets or cluttered pathways, can <a href="https://doi.org/10.1186/s12877-021-02499-x">significantly contribute to falls among older adults</a>. Older adults who lead a sedentary lifestyle or have limited physical activity may also experience reduced strength, flexibility and balance. And finally, such conditions as dementia or Alzheimer’s disease can affect judgment, attention and spatial awareness, leading to increased fall risk. <h2>Theories of aging</h2> There are numerous theories about why we age but there is no one unifying notion that explains all the changes in our bodies. A large portion of aging-related decline is <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3295054/">caused by our genes</a>, which determine the structure and function of bones, muscle growth and repair and visual depth perception, among other things. But there are also numerous lifestyle-related factors that influence our rate of aging including diet, exercise, stress and exposure to environmental toxins. A recent advance in scientific understanding of aging is that there is a difference between your <a href="https://theconversation.com/are-you-a-rapid-ager-biological-age-is-a-better-health-indicator-than-the-number-of-years-youve-lived-but-its-tricky-to-measure-198849">chronological age and your biological age</a>. Chronological age is simply the number of years you’ve been on the Earth. Biological age, however, refers to how old your cells and tissues are. It is based on physiological evidence from a blood test and is related to your physical and functional ability. Thus, if you’re healthy and fit, your biological age may be lower than your chronological age. However, the reverse can also be true. I encourage patients to focus on their biological age because it empowers them to take control over the aging process. We obviously have no control over when we are born. By focusing on the age of our cells, we can avoid long-held beliefs that our bodies are destined to develop cancer, diabetes or other conditions that <a href="https://doi.org/10.1016/j.cub.2012.07.024">have historically been tied to how long we live</a>. And by taking control of diet, exercise, sleep and other lifestyle factors you can actually <a href="https://doi.org/10.1111%2Facel.13538">decrease your biological age</a> and improve your quality of life. As one example, our team’s research has shown that moderate amounts of aerobic exercise <a href="https://doi.org/10.1371/journal.pone.0188538">can slow down motor decline</a> even when a person begins exercise in the latter half of the life span. <h2>Fall prevention</h2> Adopting lifestyle changes such as regular, long-term exercise can <a href="https://doi.org/10.1001/jamainternmed.2018.5406">reduce the consequences of aging</a>, including falls and injuries. Following a healthy diet, managing chronic conditions, reviewing medications with health care professionals, maintaining a safe home environment and getting regular vision checkups can also help reduce the risk of falls in older adults. There are several exercises that physical therapists use to improve balance for patients. It is important to note however, that before starting any exercise program, everyone should consult with a health care professional or a qualified physical therapist to determine the most appropriate exercises for their specific needs. Here are five forms of exercise I commonly recommend to my patients to improve balance: <ol> <li> Balance training can help improve coordination and <a href="https://www.sciencedirect.com/topics/neuroscience/proprioception">proprioception</a>, which is the body’s ability to sense where it is in space. By practicing movements that challenge the body’s balance, such as standing on one leg or walking heel-to-toe, the nervous system becomes better at coordinating movement and maintaining balance. A large research study analyzing nearly 8,000 older adults found that balance and functional exercises <a href="https://doi.org/10.1002/14651858.cd012424.pub2">reduce the rate of falls by 24%</a>. </li> <li> Strength training exercises involve lifting weights or using resistance bands to increase muscle strength and power. By strengthening the muscles in the legs, hips and core, older adults can improve their ability to maintain balance and stability. Our research has shown that strength training can also lead to <a href="https://doi.org/10.2147/cia.s104674">improvements in walking speed and a reduction in fall risk</a>. </li> <li> Tai chi is a gentle martial art that focuses on slow, controlled movements and shifting body weight. Research shows that it can improve balance, strength and flexibility in older adults. Several combined studies in tai chi have demonstrated a 20% reduction in the <a href="https://doi.org/10.1002/14651858.cd012424.pub2">number of people who experience falls</a>. </li> <li> Certain yoga poses can enhance balance and stability. Tree pose, warrior pose and mountain pose are examples of poses that can help improve balance. It’s best to <a href="https://theconversation.com/yoga-modern-research-shows-a-variety-of-benefits-to-both-body-and-mind-from-the-ancient-practice-197662">practice yoga</a> under the guidance of a qualified instructor who can adapt the poses to individual abilities. </li> <li> Flexibility training involves stretching the muscles and joints, which can improve range of motion and reduce stiffness. By improving range of motion, <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3990889/">older adults can improve their ability to move safely</a> and avoid falls caused by limitations in mobility. </li> <li> Use of assistive devices can be helpful when strength or balance impairments are present. Research studies involving the evaluation of canes and walkers used by older adults confirm that <a href="https://doi.org/10.1016/j.apmr.2004.04.023">these devices can improve balance and mobility</a>. Training from a physical or occupational therapist in the proper use of assistive devices is an important part of improving safety. </li> </ol> When I think back about the woman who nearly fell in the grocery store, I wish I could share everything we have learned about healthy aging with her. There’s no way to know if she was already putting these tips into practice, but I’m comforted by the thought that she may have avoided the fall by being in the right place at the right time. After all, she was standing in the produce aisle.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/204174/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/evan-papa-1433146">Evan Papa</a>, Associate Professor of Physical Therapy and Rehabilitation Science, <a href="https://theconversation.com/institutions/tufts-university-1024">Tufts University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/balance-declines-with-age-but-exercise-can-help-stave-off-some-of-the-risk-of-falling-204174">original article</a>. </div>

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Readers response: What exercises or activities do you enjoy that help you stay mobile?

It's no secret that we start to physically show down as we age, but keeping active and mobile can keep us going. We asked our readers what exercised they do to keep mobile in retirement years, and the response was overwhelming. Here's what they said. Karen Ambrose - I’ve been a dance teacher since 1982 and am still teaching. Dancing is my happy place! Rosemary Andrews - Dragon Boat Paddling. I started when I was 59. Still going 14 years on. Love it!! Anne Gray - Pilates, Yoga, Zumba. Sue Ryan - Boxing, HIIT, Body Attack, Pilates, Aqua, Pump and running. I’m 72. Wendy Oliver - Chair based exercises. Anne Moulynox - Pickleball at least twice a week. I took up ballet at 70 but gave it up as it was far too sedate, so took up Pickleball at 73. Sally O'Neill - Volunteering makes me get up and meet other people. Robyn Harrison - Swim a kilometre twice a week and two long walks on the beach each week. Suzanne Bluett - Nothing better than walking. Lorraine Clarbull - Tai Chi. Image credits: Shutterstock

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Trying to lose weight? Here’s why your genetics could be just as important as your exercise regime

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/henry-chung-1279176">Henry Chung</a>, <a href="https://theconversation.com/institutions/university-of-essex-1291">University of Essex</a>; <a href="https://theconversation.com/profiles/chris-mcmanus-2226445">Chris McManus</a>, <a href="https://theconversation.com/institutions/university-of-essex-1291">University of Essex</a>, and <a href="https://theconversation.com/profiles/sally-waterworth-2226444">Sally Waterworth</a>, <a href="https://theconversation.com/institutions/university-of-essex-1291">University of Essex</a> Weight loss is a complicated process. There are so many factors involved including your diet, how much sleep you get each night and the kind of exercise you do. Our recent study shows that your <a href="https://www.tandfonline.com/doi/full/10.1080/02701367.2024.2404981">specific genetic profile</a> may also have a dominant effect on how well you lose weight through exercise. This might explain why two people who do an identical workout will see very different results. We identified 14 genes that appeared to significantly contribute to how much weight a person lost through running. This suggests that some of us have a natural talent when it comes to burning fat and losing weight through exercise. To conduct our study, we recruited 38 men and women born in the UK aged between 20 and 40. None of the participants regularly exercised at the start of the study. The group was randomly divided, with one half following a strict eight-week endurance programme that consisted of three weekly runs of 20-30 minutes. The other group acted as a <a href="https://www.britannica.com/science/control-group">control</a>. They were instructed to refrain from exercise and continue their daily routines as normal over this study period, including diet and lifestyle habits. All participants conducted a running test to see how far they could run in 12 minutes, and were weighed before and after the study period. This was to gauge their initial fitness level and see how much they changed over the duration of the study. <a href="https://www.nhs.uk/conditions/obesity/">Body mass index</a> (BMI) was also calculated. Additionally, a saliva sample was collected from each person with a <a href="https://muhdo.com/?gclid=Cj0KCQjwiIOmBhDjARIsAP6YhSUB3WI81JP4Q_snYLhh-SBVNeCJNy2m63C8bKJFvO-nJ5UsHuCCdqMaAhTeEALw_wcB">DNA test kit</a> at the end of the study to assess their unique genetic profile. It’s important to note that everyone who participated in the study had a similar body weight, BMI and aerobic fitness level at the start of the study. This is beneficial for <a href="https://casp-uk.net/news/homogeneity-in-research/">multiple reasons</a>. It meant everyone was at the same starting point, and some <a href="https://www.sciencedirect.com/topics/nursing-and-health-professions/confounding-variable">confounding variables</a> were already controlled for such as <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10128125/">fitness level</a>. This ultimately improves accuracy in interpreting the results. <h2>Exercise genes</h2> Everyone in the exercise group managed to lose weight – around 2kg on average. The control group, on the other hand, put on a little bit of weight. While a 2kg weight loss may not sound like a lot, it’s significant considering the exercise regime only lasted eight weeks and participants made no <a href="https://www.intechopen.com/chapters/87186">changes to their diet</a>. More significant, however, was the large variation in results among those that exercised – with an up to 10kg difference in weight loss between some of the participants. In fact, everyone within the exercise group improved at different rates. Since we controlled for factors such as the <a href="https://pubmed.ncbi.nlm.nih.gov/3529283/">intensity, duration and frequency</a> of the exercises and used participants who’d had a similar body weight and fitness level at the start of the study, this suggests that some people naturally benefited more than others from endurance training. When we looked at the genetic profiles of our participants, we found that differences in each person’s response to the exercise was strongly associated with their specific genetics. We showed there was a strong linear correlation between the amount of weight participants lost and 14 genes that have previously been shown to be associated with body weight, metabolism or <a href="https://www.nature.com/articles/s41380-018-0017-5">psychological conditions</a> that affect BMI. The greater number of these genes a participant had, the more weight they lost. Our results also revealed that around 63% of the variance in weight lost among participants were explained by the genes identified. For example, research has shown the <a href="https://www.ncbi.nlm.nih.gov/gene/10891">PPARGC1A gene</a> plays a role in metabolism and the <a href="https://link.springer.com/article/10.1007/S11033-020-05801-Z">use of fats for energy</a> while exercising. Our study found that all participants who lost more than 1.5kg from exercise had this gene. Those who lost less than this did not have this gene. Our findings align with what <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0249501&s2=P875440273_1683331208925004155">previous studies</a> have shown. But while previous papers have only looked at the link between individual genes and weight loss, ours is the first to show that 14 different genes appear to work in combination to affect whether a person loses weight from endurance exercise. <h2>Piece of the puzzle</h2> Our study also suggests that while some people possess genes that make it easier for them to get fit and lose weight, people with these favourable genetics can only flourish if they actually exercise. In fact, our control group also had a number of these listed genes, but without exercise these genes could not activate, and so the participants did not lose any weight. While our study provides compelling findings, it’s not without limitations. Since we only looked at endurance-based exercise, it will be important for future studies to investigate whether there are similar links between weight loss, genetics and combinations of different types of training (such as a mixture of endurance and strength sessions into a training plan). It’s also worth mentioning that exercise is only <a href="https://www.who.int/activities/controlling-the-global-obesity-epidemic">one piece of the puzzle</a> when it comes to weight loss. So even if you have all 14 of these genes, you won’t lose any weight or get fit if you don’t exercise and maintain a healthy diet and sleep pattern. On the flip side, someone that only has a few of these favourable genes can still benefit if they exercise and are mindful of other aspects of their lifestyle.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/240506/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/henry-chung-1279176">Henry Chung</a>, Lecturer in Sport and Exercise Science, <a href="https://theconversation.com/institutions/university-of-essex-1291">University of Essex</a>; <a href="https://theconversation.com/profiles/chris-mcmanus-2226445">Chris McManus</a>, Lecturer, School of Sport, Rehabilitation and Exercise Sciences, <a href="https://theconversation.com/institutions/university-of-essex-1291">University of Essex</a>, and <a href="https://theconversation.com/profiles/sally-waterworth-2226444">Sally Waterworth</a>, Lecturer, School of Sport, Rehabilitation and Exercise Sciences, <a href="https://theconversation.com/institutions/university-of-essex-1291">University of Essex</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/trying-to-lose-weight-heres-why-your-genetics-could-be-just-as-important-as-your-exercise-regime-240506">original article</a>. </div>

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The best exercises to boost your brain health after 60

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/neva-beraud-peigne-1418228">Neva Béraud-Peigné</a>, <a href="https://theconversation.com/institutions/universite-paris-saclay-2174">Université Paris-Saclay</a>; <a href="https://theconversation.com/profiles/alexandra-perrot-1531671">Alexandra Perrot</a>, <a href="https://theconversation.com/institutions/universite-paris-saclay-2174">Université Paris-Saclay</a>, and <a href="https://theconversation.com/profiles/pauline-maillot-1167901">Pauline Maillot</a>, <a href="https://theconversation.com/institutions/universite-paris-cite-4263">Université Paris Cité</a> Have you ever thought about why we have a <a href="https://theconversation.com/fr/topics/cerveau-21903">brain</a>? The obvious answer might be “to think”. But scientist Daniel Wolpert came up with a completely different explanation at the <a href="https://www.ted.com/talks/daniel_wolpert_the_real_reason_for_brains">2011 meeting of the Society for Neuroscience</a>: <blockquote> “We have a brain for one reason and one reason only: to produce adaptable and complex movements” </blockquote> <h2>Use your brain to stay efficient</h2> The brain, in other words, is the orchestra conductor which orders the body’s movements. We call the faculties that allow us to interact with our environment cognitive abilities. These include concentrating, learning, reasoning, adapting and communicating with others. Every one of them is key in enabling us to go about our routine and help us maintain a good lifestyle. So, how can we best take care of our brains so that they can stay as efficient as long as possible? Contrary to popular belief, the brain does not deteriorate continuously with age. Instead, it only sees the number of its brain cells drop and connections deteriorate <a href="https://www.bmj.com/content/344/bmj.d7622">from the age of 45 onwards</a> as part of a normal ageing process. But cerebral plasticity, although reduced, is present until the end of life. Each individual will build up a cognitive reserve throughout their lives. The more positive, rich and stimulating the lifestyle, the more powerful and effective the reserve. In other words, it’s possible to moderate the effects of age on cognition. <h2>The benefits of physical activity on cognitive capacity after 60</h2> In fact, much research shows indeed that physical activity improves cognitive capacity, even after the age of 60. From increased memory, better reactivity to greater planning skills, the <a href="https://www.annualreviews.org/content/journals/10.1146/annurev-clinpsy-072720-014213">benefits are endless</a>. Despite this, few older folks engage in <a href="https://theconversation.com/fr/topics/activite-physique-adaptee-apa-146288">physical education</a> adapted to their bodies on a regular basis. Poor motivation and access to these exercises are some of the factors don’t help. With that in mind, many carers might be tempted to offer older people monotonous, routine activities because of their diminishing physical, cognitive and sensory abilities. And indeed, for a long time, the range of sports on offer and research in this field revolved around the same triptych: gentle gymnastics, walking and yoga. However, you’ll reap more benefits by <a href="https://www-sciencedirect-com.ezproxy.u-paris.fr/science/article/abs/pii/B9780444633279000175">combining different training methods</a>. <h2>Three ingredients to train the brains of senior citizens</h2> Researchers are currently attempting to crack the winning formula that would flex older people’s cognitive, as well as physical muscles. It’ll consist of three main ingredients: First ingredient: complex physical and motor stimulation of at least moderate intensity. Moderate cardio workouts not only improve cardiorespiratory health but also make the brain more <a href="https://www.nature.com/articles/22682">efficient</a>. Overall improved cardiofitness, in turn, allows the brain to receive more oxygen and even to generate <a href="https://www.pnas.org/doi/full/10.1073/pnas.1015950108">new neurons in the hippocampus</a>, where memory is lodged. It therefore makes sense for programmes designed to boost cognitive function to include cardio. But it is also <a href="https://journals.sagepub.com/doi/abs/10.1111/1467-9280.t01-1-01430">necessary to combine them with muscle-strengthening, flexibility and balance exercises to achieve greater benefits</a>. In addition, the <a href="https://www.sciencedirect.com/science/article/abs/pii/S0149763413001012">researchers</a> emphasise the importance of adding situations requiring complex motor skills and coordination, as these would have a significant impact on cognitive functions (e.g. memory, attention and mental flexibility), particularly in the elderly. Second ingredient: fire up those brain cells during exercises Incorporating cognitive stimulation, such as remembering information for a period of time and executing it, anticipating actions, or planning a move, is another winning strategy. When cognitive stimulation is combined with physical activity, it can produce <a href="https://www.tandfonline.com/doi/abs/10.1080/13825585.2011.645010">synergistic effects</a> and, as a result, be more effective on cognitive functions. _Third ingredient: group activities that lead to social interaction. _ Working out as part of a group has been shown to help us <a href="https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1001756">persevere through it</a>. What this winning formula could look like in practice is still being researched. At present, there are two broad types of exercises that have caught our attention that could help older people stay sharp. <h2>Opting for cooperative and oppositional team sports</h2> Team sports offer much more than just physical exercise sessions. What’s particularly great about them is that they don’t only challenge cardiorespiratory balance, but tap into the whole body’s physical skill-set. Take basketball or handball, for example: to move around the court, dribble or score, balance, coordination and flexibility are essential. Muscular strength is also required for passing, recovering the ball and moving around. These team sports can be suitable even after the age of 60, provided they are properly supervised. From a cognitive point of view, these activities create situations that are always new, rich and stimulating. We call this double combination of stimuli <a href="https://www.tandfonline.com/doi/abs/10.1080/13825585.2011.645010">simultaneous training</a>. A number of researchers have highlighted the importance of this cognitive involvement in team sports and encourage their practice, particularly among the elderly. Recent studies, such as <a href="https://linkinghub.elsevier.com/retrieve/pii/S162748302100129X">the one carried out in 2022</a> by French researchers, have shown that participation in team sports improves short-term visuospatial memory (which enables people, for example, to remember the location of certain objects for a limited period of time) and planning skills in the elderly. <h2>Get your body moving with exergames</h2> Another promising avenue are exergames – video games that require players to move around to play. Named after the contraction of “exercise” and “games”, they grew popular in the 2000s thanks to Nintendo’s Wii and Switch and Microsoft’s Kinect. Exogames have been thought out to exercise different fitness skills, such as balance, endurance, strength, and coordination, while simultaneously stimulating cognitive functions. Among older people, <a href="https://psycnet.apa.org/record/2011-27707-001">several research studies</a> show that this type of training helps to improve many physical and cognitive abilities. In 2020, a new generation of exergames emerged, making use of interactive walls to create an even more immersive gaming experience, such as Neo Xperiences’ Neo-One, Sphery’s ExerCube and Lü’s Aire interactive. In these games combining real and virtual worlds, physical objects (such as balls) and digital objects coexist and interact in real time. A <a href="https://link.springer.com/article/10.1007/s11357-023-00952-w">recent study</a> compared an exergame programme assisted by an immersive wall with a walking and muscle-strengthening programme. Its results suggest that this new generation of exergames may be more effective on cognitive abilities than traditional training. Combining physical and cognitive exercises offers the best chance to keep one’s brain health while keeping fit. This is essential for an active and fulfilling life, whatever your age.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/237162/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/neva-beraud-peigne-1418228">Neva Béraud-Peigné</a>, Doctorante en sciences du mouvement, <a href="https://theconversation.com/institutions/universite-paris-saclay-2174">Université Paris-Saclay</a>; <a href="https://theconversation.com/profiles/alexandra-perrot-1531671">Alexandra Perrot</a>, Maitre de conférences HDR, <a href="https://theconversation.com/institutions/universite-paris-saclay-2174">Université Paris-Saclay</a>, and <a href="https://theconversation.com/profiles/pauline-maillot-1167901">Pauline Maillot</a>, Maître de conférences en STAPS, <a href="https://theconversation.com/institutions/universite-paris-cite-4263">Université Paris Cité</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/the-best-exercises-to-boost-your-brain-health-after-60-237162">original article</a>. </div>

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I’ve been sick. When can I start exercising again?

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/ken-nosaka-169021">Ken Nosaka</a>, <a href="https://theconversation.com/institutions/edith-cowan-university-720">Edith Cowan University</a> You’ve had a cold or the flu and your symptoms have begun to subside. Your nose has stopped dripping, your cough is clearing and your head and muscles no longer ache. You’re ready to get off the couch. But is it too early to go for a run? Here’s what to consider when getting back to exercising after illness. <h2>Exercise can boost your immune system – but not always</h2> Exercise <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6523821/">reduces the chance</a> of getting respiratory infections by increasing your immune function and the ability to fight off viruses. However, an acute bout of endurance exercise may temporarily increase your susceptibility to upper respiratory infections, such as colds and the flu, via the short-term suppression of your immune system. This is known as the “open window” theory. A <a href="https://pubmed.ncbi.nlm.nih.gov/20839496/">study</a> from 2010 examined changes in trained cyclists’ immune systems up to eight hours after two-hour high-intensity cycling. It found important immune functions were suppressed, resulting in an increased rate of upper respiratory infections after the intense endurance exercise. So, we have to be more careful after performing harder exercises than normal. <h2>Can you exercise when you’re sick?</h2> This depends on the severity of your symptoms and the intensity of exercise. Mild to moderate exercise (reducing the intensity and length of workout) may be OK if your symptoms are a runny nose, nasal congestion, sneezing and minor sore throat, without a fever. Exercise may help you feel better by opening your nasal passages and temporarily relieving nasal congestion. However, if you try to exercise at your normal intensity when you are sick, you risk injury or more serious illness. So it’s important to listen to your body. If your symptoms include chest congestion, a cough, upset stomach, fever, fatigue or widespread muscle aches, avoid exercising. Exercising when you have these symptoms may worsen the symptoms and prolong the recovery time. If you’ve had the flu or another respiratory illness that caused a high fever, make sure your temperature is back to normal before getting back to exercise. Exercising raises your body temperature, so if you already have a fever, your temperature will become high quicker, which makes you sicker. If you have COVID or other contagious illnesses, stay at home, rest and isolate yourself from others. When you’re sick and feel weak, don’t force yourself to exercise. Focus instead on getting plenty of rest. This may actually shorten the time it takes to recover and resume your normal workout routine. <h2>I’ve been sick for a few weeks. What has happened to my strength and fitness?</h2> You may think taking two weeks off from training is disastrous, and worry you’ll lose the gains you’ve made in your previous workouts. But it could be just what the body needs. It’s true that almost all training benefits are <a href="https://journals.lww.com/acsm-csmr/fulltext/2019/04000/sports_training_principles.2.aspx">reversible</a> to some degree. This means the physical fitness that you have built up over time can be lost without regular exercise. To study the effects of de-training on our body functions, researchers have undertaken “bed rest” studies, where healthy volunteers spend up to 70 days in bed. They <a href="https://journals.physiology.org/doi/full/10.1152/japplphysiol.00415.2017">found</a> that V̇O₂max (the maximum amount of oxygen a person can use during maximal exercise, which is a measure of <a href="https://my.clevelandclinic.org/health/articles/7050-aerobic-exercise">aerobic</a> fitness) declines 0.3–0.4% a day. And the higher pre-bed-rest V̇O₂max levels, the <a href="https://journals.physiology.org/doi/full/10.1152/japplphysiol.00415.2017">larger</a> the declines. In terms of skeletal muscles, upper thigh muscles <a href="https://doi.org/10.1152/japplphysiol.00363.2020">become smaller by</a> 2% after five days of bed rest, 5% at 14 days, and 12% at 35 days of bed rest. <a href="https://journals.physiology.org/doi/full/10.1152/japplphysiol.00363.2020">Muscle strength declines more</a> than muscle mass: knee extensor muscle strength gets weaker by 8% at five days, 12% at 14 days and more than 20% after around 35 days of bed rest. This is why it feels harder to do the same exercises after resting for even five days. But in <a href="https://iaaspace.org/product/guidelines-for-standardization-of-bed-rest-studies-in-the-spaceflight-context/">bed rest studies</a>, physical activities are strictly limited, and even standing up from a bed is prohibited during the whole length of a study. When we’re sick in bed, we have some physical activities such as sitting on a bed, standing up and walking to the toilet. These activities could reduce the rate of decreases in our physical functions compared with study participants. <h2>How to ease back into exercise</h2> Start with a lower-intensity workout initially, such as going for a walk instead of a run. Your first workout back should be light so you don’t get out of breath. Go low (intensity) and go slow. Gradually increase the volume and intensity to the previous level. It may take the same number of days or weeks you rested to get back to where you were. If you were absent from an exercise routine for two weeks, for example, it may require two weeks for your fitness to return to the same level. If you feel exhausted after exercising, take an extra day off before working out again. A day or two off from exercising shouldn’t affect your performance very much.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/233130/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/ken-nosaka-169021">Ken Nosaka</a>, Professor of Exercise and Sports Science, <a href="https://theconversation.com/institutions/edith-cowan-university-720">Edith Cowan University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/ive-been-sick-when-can-i-start-exercising-again-233130">original article</a>. </div>

Body

Food and exercise can treat depression as well as a psychologist, our study found. And it’s cheaper

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/adrienne-oneil-268324">Adrienne O'Neil</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> and <a href="https://theconversation.com/profiles/sophie-mahoney-1557294">Sophie Mahoney</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> Around <a href="https://www.aihw.gov.au/getmedia/6b19e493-0ebe-420f-a9a3-e48b26aace9f/aihw-aus-249-ib.pdf?v=20240628145747&inline=true">3.2 million</a> Australians live with depression. At the same time, <a href="https://www.aihw.gov.au/getmedia/6b19e493-0ebe-420f-a9a3-e48b26aace9f/aihw-aus-249-ib.pdf?v=20240628145747&inline=true">few</a> Australians meet recommended dietary or physical activity guidelines. What has one got to do with the other? Our world-first trial, <a href="https://www.thelancet.com/journals/lanwpc/article/PIIS2666-6065%2824%2900136-6/fulltext">published this week</a>, shows improving diet and doing more physical activity can be as effective as therapy with a psychologist for treating low-grade depression. Previous studies (including <a href="https://link.springer.com/article/10.1186/s12916-017-0791-y">our own</a>) have found “lifestyle” therapies are effective for depression. But they have never been directly compared with psychological therapies – until now. Amid a nation-wide <a href="https://www.health.gov.au/sites/default/files/2023-10/national-mental-health-workforce-strategy-2022-2032.pdf">shortage</a> of mental health professionals, our research points to a potential solution. As we found lifestyle counselling was as effective as psychological therapy, our findings suggest dietitians and exercise physiologists may one day play a role in managing depression. <h2>What did our study measure?</h2> During the prolonged COVID lockdowns, Victorians’ distress levels were <a href="https://onlinelibrary.wiley.com/doi/full/10.5694/mja2.50831">high and widespread</a>. Face-to-face mental health services were limited. Our trial targeted people living in Victoria with elevated distress, meaning at least mild depression but not necessarily a diagnosed mental disorder. Typical symptoms included feeling down, hopeless, irritable or tearful. We partnered with our <a href="https://www.barwonhealth.org.au/mhdas/">local mental health service</a> to recruit 182 adults and provided group-based sessions on Zoom. All participants took part in up to six sessions over eight weeks, facilitated by health professionals. Half were randomly assigned to participate in a program co-facilitated by an accredited practising dietitian and an exercise physiologist. That group – called the lifestyle program – developed nutrition and movement goals: <ul> <li>eating a wide variety of foods</li> <li>choosing high-fibre plant foods</li> <li>including high quality fats</li> <li>limiting discretionary foods, such as those high in saturated fats and added sugars</li> <li>doing enjoyable physical activity.</li> </ul> The second group took part in psychotherapy sessions convened by two psychologists. The psychotherapy program used cognitive behavioural therapy (CBT), the gold standard for treating depression in <a href="https://jamanetwork.com/journals/jamapsychiatry/article-abstract/2730724">groups and when delivered remotely</a>. In both groups, participants could continue existing treatments (such as taking antidepressant medication). We gave both groups <a href="https://link.springer.com/article/10.1186/s12888-022-03840-3">workbooks and hampers</a>. The lifestyle group received a food hamper, while the psychotherapy group received items such as a colouring book, stress ball and head massager. <h2>Lifestyle therapies just as effective</h2> We found similar results in each program. At the trial’s beginning we gave each participant a score based on their self-reported mental health. We measured them again at the end of the program. Over eight weeks, those scores showed symptoms of depression reduced for participants in the lifestyle program (42%) and the psychotherapy program (37%). That difference was not statistically or clinically meaningful so we could conclude both treatments were as good as each other. There were some differences between groups. People in the lifestyle program improved their diet, while those in the psychotherapy program felt they had increased their social support – meaning how connected they felt to other people – compared to at the start of the treatment. Participants in both programs increased their physical activity. While this was expected for those in the lifestyle program, it was less expected for those in the psychotherapy program. It may be because they knew they were enrolled in a research study about lifestyle and subconsciously changed their activity patterns, or it could be a positive by-product of doing psychotherapy. There was also not much difference in cost. The lifestyle program was slightly cheaper to deliver: A$482 per participant, versus $503 for psychotherapy. That’s because hourly rates differ between dietitians and exercise physiologists, and psychologists. <h2>What does this mean for mental health workforce shortages?</h2> Demand for mental health services is increasing in Australia, while at the same time the workforce <a href="https://www.health.gov.au/sites/default/files/2023-10/national-mental-health-workforce-strategy-2022-2032.pdf">faces worsening nation-wide shortages</a>. Psychologists, who provide <a href="https://www.aihw.gov.au/getmedia/6b19e493-0ebe-420f-a9a3-e48b26aace9f/aihw-aus-249-ib.pdf?v=20240628145747&inline=true">about half</a> of all mental health services, can have long wait times. Our results suggest that, with the appropriate training and guidelines, allied health professionals who specialise in diet and exercise could help address this gap. Lifestyle therapies can be combined with psychology sessions for multi-disciplinary care. But diet and exercise therapies could prove particularly effective for those on waitlists to see a psychologists, who may be receiving no other professional support while they wait. Many dietitians and exercise physiologists already have advanced skills and expertise in motivating behaviour change. Most accredited practising dietitians are trained in managing <a href="https://link.springer.com/content/pdf/10.1007/978-3-030-67929-3_38-1.pdf">eating disorders</a> or <a href="https://www.nature.com/articles/s41572-020-0200-2">gastrointestinal conditions</a>, which commonly overlap with depression. There is also a cost argument. It is <a href="https://journals.sagepub.com/doi/full/10.1177/1355819616668202">overall cheaper</a> to train a dietitian ($153,039) than a psychologist ($189,063) – and it takes less time. <h2>Potential barriers</h2> Australians with chronic conditions (such as diabetes) can access subsidised dietitian and exercise physiologist appointments under various Medicare treatment plans. Those with eating disorders can also access subsidised dietitian appointments. But mental health care plans for people with depression do not support subsidised sessions with dietitians or exercise physiologists, despite <a href="https://dietitiansaustralia.org.au/sites/default/files/2024-04/Dietitians%20Australia%20Mental%20Health%20Evidence%20Brief%202024.pdf">peak bodies</a> urging them to do so. Increased training, upskilling and Medicare subsidies would be needed to support dietitians and exercise physiologists to be involved in treating mental health issues. <a href="https://foodandmoodcentre.com.au/academy">Our training</a> and clinical <a href="https://www.tandfonline.com/doi/full/10.1080/15622975.2022.2112074">guidelines</a> are intended to help clinicians practising lifestyle-based mental health care within their scope of practice (activities a health care provider can undertake). <h2>Future directions</h2> Our trial took place during COVID lockdowns and examined people with at least mild symptoms of depression who did not necessarily have a mental disorder. We are seeking to replicate these findings and are now running <a href="https://foodandmoodcentre.com.au/projects/the-harmone-trial/">a study</a> open to Australians with mental health conditions such as major depression or bipolar disorder. If this article has raised issues for you, or if you’re concerned about someone you know, call Lifeline on 13 11 14.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/235952/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/adrienne-oneil-268324">Adrienne O'Neil</a>, Professor, Food & Mood Centre, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> and <a href="https://theconversation.com/profiles/sophie-mahoney-1557294">Sophie Mahoney</a>, Associate Research Fellow, Food and Mood Centre, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/food-and-exercise-can-treat-depression-as-well-as-a-psychologist-our-study-found-and-its-cheaper-235952">original article</a>. </div>

Mind

Poor sleep is really bad for your health. But we found exercise can offset some of these harms

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/bo-huei-huang-1243280">Bo-Huei Huang</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> and <a href="https://theconversation.com/profiles/emmanuel-stamatakis-161783">Emmanuel Stamatakis</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> Despite the well-known links between poor sleep and poorer health, getting enough good quality sleep has become a luxury in modern society. Many of us struggle to improve our sleep, while amid the COVID pandemic and recurring lock-downs, <a href="https://theconversation.com/were-sleeping-more-in-lockdown-but-the-quality-is-worse-155797">our sleep has deteriorated</a>. But <a href="https://doi.org/10.1136/bjsports-2021-104046">our new study</a>, published today in the British Journal of Sports Medicine, bears some encouraging news. We found doing enough physical activity (including exercise such as running or going to the gym) may counter some of the adverse health effects of unhealthy sleep patterns. Let us explain. <h2>Does poor sleep really harm our health?</h2> Unhealthy sleep patterns include: <ul> <li> not sleeping for long enough (less than seven hours per night for adults) </li> <li> sleeping for too long (more than nine hours per night for adults) </li> <li> snoring </li> <li> insomnia </li> <li> being a night owl, also known as “late chronotype”. This is people who naturally feel most awake and motivated in the evening, and are sluggish in the morning. </li> </ul> They are <a href="https://doi.org/10/ggjqrt">all associated</a> with poorer health. Recent research shows poor sleep may: <ul> <li> cause <a href="https://doi.org/10.1038/s41577-019-0190-z">inflammation</a> </li> <li> impair the metabolism of glucose (also known as blood sugar) and reduce the number of calories burned, thereby increasing the risk of <a href="https://theconversation.com/why-sleep-is-so-important-for-losing-weight-145058">obesity</a> </li> <li> increase the risk of <a href="https://doi.org/10/gg6x87">heart disease</a> and <a href="https://doi.org/10/ggnw5h">premature death</a>. </li> </ul> However, very few studies have examined how sleep and physical activity interact and impact our health. We set out to answer the question: if I have poor sleep but I do quite a lot of physical activity, can that offset some of the harms of my poor sleep in the long-term? Or would this not make any difference? <h2>What did we do?</h2> We analysed the information provided by 380,055 middle-aged adults in the UK Biobank study, recruited between 2006 and 2010. Participants reported their level of physical activity and five aspects of their sleep. We grouped people based on their sleep behaviour into healthy, intermediate or poor. We categorised people’s level of physical activity based on <a href="https://bjsm.bmj.com/content/54/24/1451">the World Health Organization (WHO) guidelines</a>. People who met the upper bounds of the guidelines did 300 minutes of moderate intensity physical activity a week, or 150 minutes of vigorous exercise, or a combination of both. Those who met the lower bound did 150 minutes of moderate intensity exercise a week, or 75 minutes of vigorous exercise, or a combination. Moderate intensity physical activity usually makes you slightly out of breath if sustained for a few minutes and includes brisk walking or cycling at a leisurely pace. Vigorous exercise usually makes you breath hard and can include running, swimming, and playing sports like tennis, netball, soccer or footy. <figure class="align-center "><img src="https://images.theconversation.com/files/408096/original/file-20210624-15-1qfe1ay.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/408096/original/file-20210624-15-1qfe1ay.png?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=409&fit=crop&dpr=1 600w, https://images.theconversation.com/files/408096/original/file-20210624-15-1qfe1ay.png?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=409&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/408096/original/file-20210624-15-1qfe1ay.png?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=409&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/408096/original/file-20210624-15-1qfe1ay.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=515&fit=crop&dpr=1 754w, https://images.theconversation.com/files/408096/original/file-20210624-15-1qfe1ay.png?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=515&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/408096/original/file-20210624-15-1qfe1ay.png?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=515&fit=crop&dpr=3 2262w" alt="" /><figcaption>Doing at least 150 minutes of moderate intensity physical activity a week, or 75 minutes of vigorous exercise, can offset some of the health harms of poor sleep. <a class="source" href="https://apps.who.int/iris/bitstream/handle/10665/336656/9789240015128-eng.pdf?sequence=1&isAllowed=y">World Health Organization, CC BY-NC-SA 3.0 IGO</a></figcaption></figure> <h2>What did we find?</h2> We followed up with the participants after 11 years. By May 2020, 15,503 participants had died, of which 4,095 died from heart disease and 9,064 died from cancer. <a href="https://doi.org/10.1136/bjsports-2021-104046">We found</a> that, compared to healthy sleepers, people with poor sleep had a 23% higher risk of premature death, a 39% higher risk of dying from heart disease, and a 13% higher risk of dying from cancer. We then compared the data of people who slept well with those who slept poorly, and how much they exercised. We found people who had the highest risk of dying from heart disease and cancer were those who had poor sleep and didn’t meet the WHO physical activity guidelines. On the other hand, those who had poor sleep but did enough physical activity to meet the WHO guidelines didn’t have as high a risk of dying from heart disease or cancer, compared to those who slept poorly and didn’t meet the physical activity guidelines. For example, let’s look at the risk of dying from cancer. Those who had poor sleep and did no physical activity had a 45% higher risk of dying from cancer compared to those who had healthy sleep and exercised a lot. But among those who met the physical activity guidelines, despite poor sleep, they didn’t really have a higher risk of dying from cancer any more. We found physical activity levels which met at least the bottom threshold of the WHO guidelines could reduce or eliminate some of the health harms of poor sleep. So people who did at least 150 minutes of moderate intensity or 75 minutes of vigorous intensity exercise per week were to some extent protected against the detrimental health effects of poor sleep. Those who had both poor sleep and did no moderate-to-vigorous intensity physical activity had the highest risks of premature death. Our study wasn’t designed to find out how and why physical activity may counteract some of the bad physiological impacts of poor sleep. But other research provides theories. For example, adequate physical activity may <a href="https://doi.org/10.1249/MSS.0000000000001179">reduce inflammation, help maintain a healthy glucose metabolism</a>, and <a href="https://doi.org/10.1016/j.pcad.2018.07.014">increase the number of calories burned</a>. It’s important to note our study was what’s called an “observational study”. It shows an association between adequate physical activity and reduced harms from poor sleep, but we must be careful in interpreting causation. It can’t conclusively say adequate physical activity causes the reduction of harms from poor sleep, though there’s strong evidence for an association in the right direction. Our study offers a hopeful message, that even if you haven’t been able to improve your sleep, you can still offset some of the health harms by doing enough exercise. <a href="https://www.sciencedirect.com/science/article/abs/pii/S009174352030339X">Our previous research</a> has also shown physical activity may help improve poor sleep patterns, which are a serious health problem across the world. In addition to combating some of the negative outcomes of poor sleep, physical activity can also provide many other health benefits and extend our lives. For example, a 2019 study found people who met WHO’s physical activity target above <a href="https://doi.org/10.1186/s12916-019-1339-0">lived three years longer on average</a> than those who didn’t. During lockdowns, access to parks, gyms, and swimming pools might be limited in many places. But there are still many ways to <a href="https://www.euro.who.int/en/health-topics/health-emergencies/coronavirus-covid-19/publications-and-technical-guidance/noncommunicable-diseases/stay-physically-active-during-self-quarantine">to stay fit and active at home during the coronavirus</a>.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/163270/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/bo-huei-huang-1243280">Bo-Huei Huang</a>, PhD candidate, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> and <a href="https://theconversation.com/profiles/emmanuel-stamatakis-161783">Emmanuel Stamatakis</a>, Professor of Physical Activity, Lifestyle, and Population Health, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/poor-sleep-is-really-bad-for-your-health-but-we-found-exercise-can-offset-some-of-these-harms-163270">original article</a>. </div>

Body

Want to sleep longer? Adding mini-bursts of exercise to your evening routine can help

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/jennifer-gale-1548741">Jennifer Gale</a>, <a href="https://theconversation.com/institutions/university-of-otago-1304">University of Otago</a> and <a href="https://theconversation.com/profiles/meredith-peddie-1548807">Meredith Peddie</a>, <a href="https://theconversation.com/institutions/university-of-otago-1304">University of Otago</a> Exercising before bed has <a href="https://www.sciencedirect.com/science/article/pii/S2352721815000157">long been discouraged</a> as the body doesn’t have time to wind down before the lights go out. But <a href="https://bmjopensem.bmj.com/content/10/3/e001774">new research</a> has found breaking up a quiet, sedentary evening of watching television with short bursts of resistance exercise can lead to longer periods of sleep. Adults spend almost one third of the 24-hour day sleeping. But the quality and length of sleep can affect long-term health. Sleeping too little or waking often in the night is associated with an <a href="https://academic.oup.com/sleep/article-lookup/doi/10.5665/sleep.1382">increased risk of heart disease</a> and <a href="https://diabetesjournals.org/care/article/33/2/414/27149/Quantity-and-Quality-of-Sleep-and-Incidence-of">diabetes</a>. Physical activity during the day can help improve sleep. However, <a href="https://www.sciencedirect.com/science/article/pii/S2352721815000157">current recommendations</a> discourage intense exercise before going to bed as it can increase a person’s heart rate and core temperature, which can ultimately disrupt sleep. <h2>Nighttime habits</h2> For many, the longest period of uninterrupted sitting happens at home in the evening. People also usually consume their largest meal during this time (or snack throughout the evening). Insulin (the hormone that helps to remove sugar from the blood stream) tends to be at a lower level in the evening than in the morning. Together these factors promote elevated blood sugar levels, which over the long term can be bad for a person’s health. Our <a href="https://journals.lww.com/acsm-msse/fulltext/2023/08000/breaking_up_evening_sitting_with_resistance.14.aspx">previous research</a> found interrupting evening sitting every 30 minutes with three minutes of resistance exercise reduces the amount of sugar in the bloodstream after eating a meal. But because sleep guidelines currently discourage exercising in the hours before going to sleep, we wanted to know if frequently performing these short bursts of light activity in the evening would affect sleep. <h2>Activity breaks for better sleep</h2> In our latest research, we asked 30 adults to complete two sessions based in a laboratory. During one session the adults sat continuously for a four-hour period while watching streaming services. During the other session, they interrupted sitting by performing three minutes of body-weight resistance exercises (squats, calf raises and hip extensions) every 30 minutes. After these sessions, participants went home to their normal life routines. Their sleep that evening was measured using a wrist monitor. Our research found the quality of sleep (measured by how many times they woke in the night and the length of these awakenings) was the same after the two sessions. But the night after the participants did the exercise “activity breaks” they slept for almost 30 minutes longer. Identifying the biological reasons for the extended sleep in our study requires further research. But regardless of the reason, if activity breaks can extend sleep duration, then getting up and moving at regular intervals in the evening is likely to have clear health benefits. <h2>Time to revisit guidelines</h2> These results add to <a href="https://linkinghub.elsevier.com/retrieve/pii/S1087079221001209">earlier work</a> suggesting current sleep guidelines, which discourage evening exercise before bed, may need to be reviewed. As the activity breaks were performed in a highly controlled laboratory environment, future research should explore how activity breaks performed in real life affect peoples sleep. We selected simple, body-weight exercises to use in this study as they don’t require people to interrupt the show they may be watching, and don’t require a large space or equipment. If people wanted to incorporate activity breaks in their own evening routines, they could probably get the same benefit from other types of exercise. For example, marching on the spot, walking up and down stairs, or even dancing in the living room. The key is to frequently interrupt evening sitting time, with a little bit of whole-body movement at regular intervals. In the long run, performing activity breaks may improve health by improving sleep and post-meal blood sugar levels. The most important thing is to get up frequently and move the body, in a way the works best for a person’s individual household.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/234896/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/jennifer-gale-1548741">Jennifer Gale</a>, PhD candidate, Department of Human Nutrition, <a href="https://theconversation.com/institutions/university-of-otago-1304">University of Otago</a> and <a href="https://theconversation.com/profiles/meredith-peddie-1548807">Meredith Peddie</a>, Senior Lecturer, Department of Human Nutrition, <a href="https://theconversation.com/institutions/university-of-otago-1304">University of Otago</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/want-to-sleep-longer-adding-mini-bursts-of-exercise-to-your-evening-routine-can-help-new-study-234896">original article</a>. </div>

Body

Want the health benefits of strength training but not keen on the gym? Try ‘exercise snacking’

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/justin-keogh-129041">Justin Keogh</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> and <a href="https://theconversation.com/profiles/jackson-fyfe-134774">Jackson Fyfe</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> The science is clear: <a href="https://cdnsciencepub.com/doi/full/10.1139/apnm-2020-0245">resistance training</a> is crucial to ageing well. Lifting weights (or doing bodyweight exercises like lunges, squats or push-ups) can help you live independently for longer, make your bones stronger, reduce your risk of diseases such as diabetes, and may even improve your <a href="https://pubmed.ncbi.nlm.nih.gov/28919335/">sleep and mental health</a>. But not everyone loves the gym. Perhaps you feel you’re not a “gym person” and never will be, or you’re too old to start. Being a gym-goer can be expensive and time-consuming, and some people report feeling <a href="https://www.reddit.com/r/StartingStrength/comments/j3hq32/unwelcome_feeling_at_the_gym/">unwelcome</a> or <a href="https://www.quora.com/I-feel-awkward-and-I-want-to-start-a-gym-but-could-not-What-should-I-do">awkward</a> at the gym. The good news is you don’t need the gym, or lots of free time, to get the health benefits resistance training can offer. You can try “exercise snacking” instead. <h2>What is exercise snacking?</h2> Exercise snacking involves doing multiple shorter bouts (as little as 20 seconds) of exercise throughout the day – often with minimal or no equipment. It’s OK to have <a href="https://doi.org/10.1007/s40279-021-01605-8">several hours of rest</a> between. You could do simple bodyweight exercises such as: <ul> <li> chair sit-to-stand (squats) </li> <li> lunges </li> <li> box step-ups </li> <li> calf raises </li> <li> push-ups. </li> </ul> Exercise snacking like this can help improve muscle mass, strength and physical function. It’s OK to hold onto a nearby object for balance, if you need. And doing these exercises regularly will also improve your balance. That, in turn, reduces your risk of falls and fractures. <h2>OK I have done all those, now what?</h2> Great! You can also try using resistance bands or dumbbells to do the previously mentioned five exercises as well as some of the following exercises: <ul> <li> <a href="https://youtu.be/IP4wM2JpDdQ?si=1B1GyV_FY5rcArW8&t=6">seated rows</a> </li> <li> <a href="https://youtu.be/G6GIffCaJCQ?si=RxXZtzMqQ0DGxF3k&t=48">chest</a> and <a href="https://www.youtube.com/watch?v=TUnnz5i4Mnw&t=5s">shoulder presses</a> </li> <li> <a href="https://youtu.be/z0omicIkYu4?si=8WffT3ij12SNTqEs">bicep curls</a> </li> <li> <a href="https://www.youtube.com/watch?v=5wXVnxBgLHo">knee extensions</a> </li> <li> <a href="https://www.youtube.com/watch?v=LtTcXXgeRYo">leg curls</a>. </li> </ul> When using resistance bands, make sure you hold them tightly and that they’re securely attached to an immovable object. Exercise snacking works well when you pair it with an activity you do often throughout the day. Perhaps you could: <ul> <li> do a few extra squats every time you get up from a bed or chair </li> <li> do some lunges during a TV ad break </li> <li> chuck in a few half squats while you’re waiting for your kettle to boil </li> <li> do a couple of elevated push-ups (where you support your body with your hands on a chair or a bench while doing the push-up) before tucking into lunch </li> <li> sneak in a couple of calf raises while you’re brushing your teeth. </li> </ul> <h2>What does the evidence say about exercise snacking?</h2> One <a href="https://pubmed.ncbi.nlm.nih.gov/31687210/">study</a> had older adults without a history of resistance training do exercise snacks at home twice per day for four weeks. Each session involved five simple bodyweight exercises (chair sit-to-stand, seated knee extension, standing knee bends, marching on the spot, and standing calf raises). The participants did each exercise continuously for one minute, with a one-minute break between exercises. These short and simple exercise sessions, which lasted just nine minutes, were enough to improve a person’s ability to stand up from a chair by 31% after four weeks (compared to a control group who didn’t exercise). Leg power and thigh muscle size improved, too. Research involving one of us (Jackson Fyfe) has also <a href="https://bmcgeriatr.biomedcentral.com/articles/10.1186/s12877-022-03207-z">shown</a> older adults found “exercise snacking” feasible and enjoyable when done at home either once, twice, or three times per day for four weeks. Exercise snacking may be a more sustainable approach to improve muscle health in those who don’t want to – or can’t – lift heavier weights in a gym. <h2>A little can yield a lot</h2> We know from other research that the more you exercise, the more likely it is you will <a href="https://www.sciencedirect.com/science/article/pii/S0167268119302586">keep exercising in future</a>. Very brief resistance training, albeit with heavier weights, may be more <a href="https://pubmed.ncbi.nlm.nih.gov/29975122/">enjoyable</a> than traditional approaches where people aim to do many, many sets. We also know brief-and-frequent exercise sessions can break up <a href="https://pubmed.ncbi.nlm.nih.gov/26378942/">periods</a> of sedentary behaviour (which usually means sitting too much). Too much sitting increases your risk of chronic diseases such as diabetes, whereas exercise snacking can help keep your <a href="https://pubmed.ncbi.nlm.nih.gov/36921112/">blood sugar levels steady</a>. Of course, longer-term studies are needed. But the evidence we do have suggests exercise snacking really helps. <h2>Why does any of this matter?</h2> As you age, you lose strength and mass in the muscles you use to walk, or stand up. Everyday tasks can become a struggle. All this <a href="https://pubmed.ncbi.nlm.nih.gov/36907247/">contributes</a> to disability, hospitalisation, chronic disease, and reliance on community and residential aged care support. By preserving your muscle mass and strength, you can: <ul> <li> reduce joint pain </li> <li> get on with activities you enjoy </li> <li> live independently in your own home </li> <li> delay or even eliminate the need for expensive health care or residential aged care. </li> </ul> <h2>What if I walk a lot – is that enough?</h2> Walking may maintain some level of lower body muscle mass, but it won’t preserve your <a href="https://pubmed.ncbi.nlm.nih.gov/38190393/">upper body muscles</a>. If you find it difficult to get out of a chair, or can only walk short distances without getting out of breath, resistance training is the best way to regain some of the independence and function you’ve lost. It’s even more important for women, as muscle mass and strength are typically lower in older women than men. And if you’ve been diagnosed with osteoporosis, which is more common in older women than men, resistance exercise snacking at home can improve your balance, strength, and bone mineral density. All of this reduces the risk of falls and fractures. You don’t need <a href="https://pubmed.ncbi.nlm.nih.gov/37171517/">heavy weights</a> or fancy equipment to benefit from resistance training. So, will you start exercise snacking today?<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/232374/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/justin-keogh-129041">Justin Keogh</a>, Associate Dean of Research, Faculty of Health Sciences and Medicine, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> and <a href="https://theconversation.com/profiles/jackson-fyfe-134774">Jackson Fyfe</a>, Senior Lecturer, Strength and Conditioning Sciences, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/want-the-health-benefits-of-strength-training-but-not-keen-on-the-gym-try-exercise-snacking-232374">original article</a>. </div>

Body

What are compound exercises and why are they good for you?

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/mandy-hagstrom-1180806">Mandy Hagstrom</a>, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> and <a href="https://theconversation.com/profiles/anurag-pandit-1534963">Anurag Pandit</a>, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> So you’ve got yourself a gym membership or bought a set of home weights. Now what? With the sheer amount of confusing exercise advice out there, it can be hard to decide what to include in a weights routine. It can help to know there are broadly two types of movements in resistance training (lifting weights): compound exercises and isolation exercises. So what’s the difference? And what’s all this got to do with strength, speed and healthy ageing? <h2>What’s the difference?</h2> Compound exercises involve multiple joints and muscle groups working together. In a push up, for example, your shoulder and elbow joints are moving together. This targets the muscles in the chest, shoulder and triceps. When you do a squat, you’re using your thigh and butt muscles, your back, and even the muscles in your core. It can help to think about compound movements by grouping them by primary movement patterns. For example, some lower body compound exercises follow a “squat pattern”. Examples include bodyweight squats, weighted squats, lunges and split squats. We also have “hinge patterns”, where you hinge from a point on your body (such as the hips). Examples include deadlifts, hip thrusts and kettle bell swings. Upper body compounded exercises can be grouped into “push patterns” (such as vertical barbell lifts) or “pull patterns” (such as weighted rows, chin ups or lat pull downs, which is where you use a pulley system machine to lift weights by pulling a bar downwards). In contrast, isolation exercises are movements that occur at a single joint. For instance, bicep curls only require movement at the elbow joint and work your bicep muscles. Tricep extensions and lateral raises are other examples of isolation exercises. <h2>Compound exercises can make daily life easier</h2> Many compound exercises mimic movements we do every day. Hinge patterns mimic picking something off the floor. A vertical press mimics putting a heavy box on a high shelf. A squat mimics standing up from the couch or getting on and off the toilet. That might sound ridiculous to a young, fit person (“why would I need to practise getting on and off a toilet?”). Unfortunately, we lose strength and muscle mass as we age. Men lose about <a href="https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2012.00260/full">5%</a> of their muscle mass per decade, while for women the figure is about <a href="https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2012.00260/full">4%</a> per decade. When this decline begins can vary widely. However, approximately 30% of an adult’s peak muscle mass is lost by the time they are 80. The good news is resistance training can counteract these <a href="https://journals.lww.com/nsca-jscr/fulltext/2019/08000/resistance_training_for_older_adults__position.1.aspx">age-related changes</a> in muscle size and strength. So building strength through compound exercise movements may help make daily life feel a bit easier. In fact, our ability to perform compound movements are a good indicator how well we can function <a href="https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1442-2018.2007.00317.x">as we age</a>. <h2>What about strength and athletic ability?</h2> Compound exercises use multiple joints, so you can generally lift heavier weights than you could with isolation exercises. Lifting a heavier weight means you can build muscle strength more efficiently. One <a href="https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2017.01105/full">study</a> divided a group of 36 people into two. Three times a week, one group performed isolation exercises, while the other group did compound exercises. After eight weeks, both groups had lost fat. But the compound exercises group saw much better results on measures of cardiovascular fitness, bench press strength, knee extension strength, and squat strength. If you play a sport, compound movements can also help boost athletic ability. Squat patterns require your hip, knee, and ankle to extend at the same time (also known as triple extension). Our bodies use this triple extension trick when we run, sprint, jump or change direction quickly. In fact, research has found squat strength is strongly linked to being able to <a href="https://bjsm.bmj.com/content/38/3/285.short?casa_token=hQDvLoU1GWYAAAAA:bx5DqM5HevN8AJpVLOWN5KlNKgqYubTysTvl5dqYr8855acTxNgf4QEmPELWU1hzL6HG9ZezysFQ">sprint faster and jump higher</a>. <h2>Isolation exercises are still good</h2> What if you’re unable to do compound movements, or you just don’t want to? Don’t worry, you’ll still build strength and muscle with isolation exercises. Isolation exercises are also typically <a href="https://www.sciencedirect.com/science/article/pii/S0079612303430033">easier to learn</a> as there is no skill required. They are an easy and low risk way to add extra exercise at the end of the workout, where you might otherwise be too tired to do more compound exercises safely and with correct form. In fact, both isolation and compound exercises seem to be equally effective in helping us <a href="https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2017.01105/full">lose body fat and increase fat-free muscle mass</a> when total intensity and volume of exercises are otherwise equal. Some people also do isolation exercises when they want to build up a particular muscle group for a certain sport or for a bodybuilding competition, for example. <h2>I just want a time efficient workout</h2> Considering the above factors, you could consider prioritising compound exercises if you’re: <ul> <li> time poor </li> <li> keen to lift heavier weights </li> <li> looking for an efficient way to train many muscles in the one workout </li> <li> interested in healthy ageing. </li> </ul> That said, most well designed workout programs will include both compound and isolation movements.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/228385/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/mandy-hagstrom-1180806">Mandy Hagstrom</a>, Senior Lecturer, Exercise Physiology. School of Health Sciences, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> and <a href="https://theconversation.com/profiles/anurag-pandit-1534963">Anurag Pandit</a>, PhD Candidate in Exercise Physiology, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/what-are-compound-exercises-and-why-are-they-good-for-you-228385">original article</a>. </div>

Body

Exercise, therapy and diet can all improve life during cancer treatment and boost survival. Here’s how

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/rob-newton-12124">Rob Newton</a>, <a href="https://theconversation.com/institutions/edith-cowan-university-720">Edith Cowan University</a> With so many high-profile people <a href="https://www.theguardian.com/uk-news/2024/mar/23/cancer-charities-princess-of-wales-speaking-about-diagnosis">diagnosed with cancer</a> we are confronted with the stark reality the disease can strike any of us at any time. There are also reports certain cancers are <a href="https://www.cancer.org/research/acs-research-news/facts-and-figures-2024.html">increasing among younger people</a> in their 30s and 40s. On the positive side, medical treatments for cancer are advancing very rapidly. Survival rates are <a href="https://acsjournals.onlinelibrary.wiley.com/doi/10.3322/caac.21763">improving greatly</a> and some cancers are now being managed more as <a href="https://www.cancer.org/cancer/survivorship/long-term-health-concerns/cancer-as-a-chronic-illness.html">long-term chronic diseases</a> rather than illnesses that will rapidly claim a patient’s life. The <a href="https://www.cancer.org/cancer/managing-cancer/treatment-types.html">mainstays of cancer treatment</a> remain surgery, chemotherapy, radiation therapy, immunotherapy, targeted therapy and hormone therapy. But there are other treatments and strategies – “adjunct” or supportive cancer care – that can have a powerful impact on a patient’s quality of life, survival and experience during cancer treatment. <h2>Keep moving if you can</h2> Physical exercise is now recognised as a <a href="https://www.exerciseismedicine.org/">medicine</a>. It can be tailored to the patient and their health issues to stimulate the body and build an internal environment where <a href="https://wchh.onlinelibrary.wiley.com/doi/full/10.1002/tre.884">cancer is less likely to flourish</a>. It does this in a number of ways. Exercise provides a strong stimulus to our immune system, increasing the number of cancer-fighting immune cells in our blood circulation and infusing these into the tumour tissue <a href="https://jitc.bmj.com/content/9/7/e001872">to identify and kill cancer cells</a>. Our skeletal muscles (those attached to bone for movement) release signalling molecules called <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7288608/">myokines</a>. The larger the muscle mass, the more myokines are released – even when a person is at rest. However, during and immediately after bouts of exercise, a further surge of myokines is secreted into the bloodstream. Myokines attach to immune cells, stimulating them to be better “hunter-killers”. Myokines also signal directly to cancer cells <a href="https://www.sciencedirect.com/science/article/pii/S2095254623001175">slowing their growth and causing cell death</a>. Exercise can also greatly <a href="https://wchh.onlinelibrary.wiley.com/doi/full/10.1002/tre.884">reduce the side effects of cancer treatment</a> such as fatigue, muscle and bone loss, and fat gain. And it reduces the risk of <a href="https://doi.org/10.2337/diacare.27.7.1812">developing other chronic diseases</a> such as heart disease and type 2 diabetes. Exercise can maintain or improve quality of life and mental health <a href="https://www.hindawi.com/journals/tbj/2022/9921575/">for patients with cancer</a>. Emerging research evidence indicates exercise might increase the effectiveness of mainstream treatments such as <a href="https://aacrjournals.org/cancerres/article/81/19/4889/670308/Effects-of-Exercise-on-Cancer-Treatment-Efficacy-A">chemotherapy</a> and <a href="https://www.nature.com/articles/s41391-020-0245-z">radiation therapy</a>. Exercise is certainly essential for preparing the patient for any surgery to increase cardio-respiratory fitness, reduce systemic inflammation, and increase muscle mass, strength and physical function, and then <a href="https://www.jsams.org/article/S1440-2440(18)31270-2/fulltext">rehabilitating them after surgery</a>. These mechanisms explain why cancer patients who are physically active have much <a href="https://journals.lww.com/acsm-msse/fulltext/2019/06000/physical_activity_in_cancer_prevention_and.20.aspx">better survival outcomes</a> with the relative risk of death from cancer <a href="https://journals.lww.com/acsm-msse/fulltext/2019/06000/physical_activity_in_cancer_prevention_and.20.aspx">reduced by as much as 40–50%</a>. <h2>Mental health helps</h2> The second “tool” which has a major role in cancer management is <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6016045/">psycho-oncology</a>. It involves the psychological, social, behavioural and emotional aspects of cancer for not only the patient but also their carers and family. The aim is to maintain or improve quality of life and mental health aspects such as emotional distress, anxiety, depression, sexual health, coping strategies, personal identity and relationships. Supporting quality of life and happiness is important on their own, but these barometers <a href="https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2024.1349880/full">can also impact</a> a patient’s physical health, response to exercise medicine, resilience to disease and to treatments. If a patient is highly distressed or anxious, their body can enter a flight or fight response. This creates an internal environment that is actually supportive of cancer progression <a href="https://www.cancer.gov/about-cancer/coping/feelings/stress-fact-sheet">through hormonal and inflammatory mechanisms</a>. So it’s essential their mental health is supported. <h2>Putting the good things in: diet</h2> A third therapy in the supportive cancer care toolbox is diet. A healthy diet <a href="https://www.cancer.org/cancer/survivorship/coping/nutrition/benefits.html">can support the body</a> to fight cancer and help it tolerate and recover from medical or surgical treatments. Inflammation provides a more fertile environment <a href="https://www.cancer.gov/news-events/cancer-currents-blog/2022/reducing-inflammation-to-treat-cancer">for cancer cells</a>. If a patient is overweight with excessive fat tissue then a diet to reduce fat which is also anti-inflammatory can be very helpful. This <a href="https://www.frontiersin.org/articles/10.3389/fnut.2021.709435/full">generally means</a> avoiding processed foods and eating predominantly fresh food, locally sourced and mostly plant based. Muscle loss is <a href="https://onlinelibrary.wiley.com/doi/10.1002/rco2.56">a side effect of all cancer treatments</a>. Resistance training exercise can help but people may need protein supplements or diet changes to make sure they get enough protein to build muscle. Older age and cancer treatments may reduce both the intake of protein and compromise absorption so <a href="https://www.sciencedirect.com/science/article/pii/S0261561421005422">supplementation may be indicated</a>. Depending on the cancer and treatment, some patients may require highly specialised diet therapy. Some cancers such as pancreatic, stomach, esophageal, and lung cancer can cause rapid and uncontrolled drops in body weight. This is called <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8233663/">cachexia and needs careful management</a>. Other cancers and treatments such as hormone therapy can cause rapid weight gain. This also needs careful monitoring and guidance so that, when a patient is clear of cancer, they are not left with higher risks of other health problems such as cardiovascular disease and metabolic syndrome (a cluster of conditions that boost your risk of heart disease, stroke and type 2 diabetes). <h2>Working as a team</h2> These are three of the most powerful tools in the supportive care toolbox for people with cancer. None of them are “cures” for cancer, alone or together. But they can work in tandem with medical treatments to greatly improve outcomes for patients. If you or someone you care about has cancer, national and state cancer councils and cancer-specific organisations can provide support. For exercise medicine support it is best to consult with an <a href="https://www.essa.org.au/Public/Public/Consumer_Information/What_is_an_Accredited_Exercise_Physiologist_.aspx">accredited exercise physiologist</a>, for diet therapy an <a href="https://dietitiansaustralia.org.au/working-dietetics/standards-and-scope/role-accredited-practising-dietitian">accredited practising dietitian</a> and mental health support with a <a href="https://psychology.org.au/psychology/about-psychology/what-is-psychology">registered psychologist</a>. Some of these services are supported through Medicare on referral from a general practitioner. <hr /> For free and confidential cancer support call the <a href="https://www.cancer.org.au/support-and-services/cancer-council-13-11-20">Cancer Council</a> on 13 11 20.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/226720/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/rob-newton-12124">Rob Newton</a>, Professor of Exercise Medicine, <a href="https://theconversation.com/institutions/edith-cowan-university-720">Edith Cowan University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/exercise-therapy-and-diet-can-all-improve-life-during-cancer-treatment-and-boost-survival-heres-how-226720">original article</a>. </div>

Caring

What are heart rate zones, and how can you incorporate them into your exercise routine?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/hunter-bennett-1053061">Hunter Bennett</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> If you spend a lot of time exploring fitness content online, you might have come across the concept of heart rate zones. Heart rate zone training has become more popular in recent years partly because of the boom in wearable technology which, among other functions, allows people to easily track their heart rates. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6537749/">Heart rate zones</a> reflect different levels of intensity during aerobic exercise. They’re most often based on a percentage of your maximum heart rate, which is the highest number of beats your heart can achieve per minute. But what are the different heart rate zones, and how can you use these zones to optimise your workout? <h2>The three-zone model</h2> While there are several models used to describe heart rate zones, the most common model in the scientific literature is the <a href="https://journals.humankinetics.com/view/journals/ijspp/9/1/article-p100.xml">three-zone model</a>, where the zones may be categorised as follows: <ul> <li> zone 1: 55%–82% of maximum heart rate </li> <li> zone 2: 82%–87% of maximum heart rate </li> <li> zone 3: 87%–97% of maximum heart rate. </li> </ul> If you’re not sure what your maximum heart rate is, it can be calculated using <a href="https://www.jacc.org/doi/full/10.1016/S0735-1097%2800%2901054-8">this equation</a>: 208 – (0.7 × age in years). For example, I’m 32 years old. 208 – (0.7 x 32) = 185.6, so my predicted maximum heart rate is around 186 beats per minute. There are also other models used to describe heart rate zones, such as the <a href="https://journals.humankinetics.com/view/journals/ijspp/14/8/article-p1151.xml">five-zone model</a> (as its name implies, this one has five distinct zones). These <a href="https://journals.humankinetics.com/view/journals/ijspp/9/1/article-p100.xml">models</a> largely describe the same thing and can mostly be used interchangeably. <h2>What do the different zones involve?</h2> The three zones are based around a person’s <a href="https://link.springer.com/article/10.2165/00007256-200939060-00003">lactate threshold</a>, which describes the point at which exercise intensity moves from being predominantly aerobic, to predominantly anaerobic. Aerobic exercise <a href="https://www.healthline.com/health/fitness-exercise/difference-between-aerobic-and-anaerobic">uses oxygen</a> to help our muscles keep going, ensuring we can continue for a long time without fatiguing. Anaerobic exercise, however, uses stored energy to fuel exercise. Anaerobic exercise also accrues metabolic byproducts (such as lactate) that increase fatigue, meaning we can only produce energy anaerobically for a short time. On average your lactate threshold tends to sit around <a href="https://www.tandfonline.com/doi/full/10.2147/OAJSM.S141657">85% of your maximum heart rate</a>, although this varies from person to person, and can be <a href="https://journals.physiology.org/doi/full/10.1152/japplphysiol.00043.2013">higher in athletes</a>. In the three-zone model, each zone loosely describes <a href="https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2015.00295/full">one of three types of training</a>. Zone 1 represents high-volume, low-intensity exercise, usually performed for long periods and at an easy pace, well below lactate threshold. Examples include jogging or cycling at a gentle pace. Zone 2 is threshold training, also known as tempo training, a moderate intensity training method performed for moderate durations, at (or around) lactate threshold. This could be running, rowing or cycling at a speed where it’s difficult to speak full sentences. Zone 3 mostly describes methods of high-intensity interval training, which are performed for shorter durations and at intensities above lactate threshold. For example, any circuit style workout that has you exercising hard for 30 seconds then resting for 30 seconds would be zone 3. <h2>Striking a balance</h2> To maximise endurance performance, you need to strike a balance between doing enough training to elicit positive changes, while avoiding over-training, injury and burnout. While zone 3 is thought to produce the largest improvements in <a href="https://www.sciencedirect.com/science/article/pii/S1440244018309198">maximal oxygen uptake</a> – one of the best predictors of endurance performance and overall health – it’s also the most tiring. This means you can only perform so much of it before it becomes too much. Training in different heart rate zones improves <a href="https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=38c07018c0636422d9d5a77316216efb3c10164f">slightly different physiological qualities</a>, and so by spending time in each zone, you ensure a <a href="https://link.springer.com/article/10.1007/bf00426304">variety of benefits</a> for performance and health. <h2>So how much time should you spend in each zone?</h2> Most <a href="https://www.frontiersin.org/articles/10.3389/fspor.2023.1258585/full">elite endurance athletes</a>, including runners, rowers, and even cross-country skiers, tend to spend most of their training (around 80%) in zone 1, with the rest split between zones 2 and 3. Because elite endurance athletes train a lot, most of it needs to be in zone 1, otherwise they risk injury and burnout. For example, some runners accumulate <a href="https://journals.humankinetics.com/view/journals/ijsnem/22/5/article-p392.xml?content=pdf">more than 250 kilometres per week</a>, which would be impossible to recover from if it was all performed in zone 2 or 3. Of course, most people are not professional athletes. The <a href="https://www.who.int/news-room/fact-sheets/detail/physical-activity">World Health Organization</a> recommends adults aim for 150–300 minutes of moderate intensity exercise per week, or 75–150 minutes of vigorous exercise per week. If you look at this in the context of heart rate zones, you could consider zone 1 training as moderate intensity, and zones 2 and 3 as vigorous. Then, you can use heart rate zones to make sure you’re exercising to meet these guidelines. <h2>What if I don’t have a heart rate monitor?</h2> If you don’t have access to a heart rate tracker, that doesn’t mean you can’t use heart rate zones to guide your training. The three heart rate zones discussed in this article can also be prescribed based on feel using a simple <a href="https://onlinelibrary.wiley.com/doi/10.1111/j.1600-0838.2004.00418.x">10-point scale</a>, where 0 indicates no effort, and 10 indicates the maximum amount of effort you can produce. With this system, zone 1 aligns with a 4 or less out of 10, zone 2 with 4.5 to 6.5 out of 10, and zone 3 as a 7 or higher out of 10. Heart rate zones are not a perfect measure of exercise intensity, but can be a useful tool. And if you don’t want to worry about heart rate zones at all, that’s also fine. The most important thing is to simply get moving.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/228520/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/hunter-bennett-1053061">Hunter Bennett</a>, Lecturer in Exercise Science, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/what-are-heart-rate-zones-and-how-can-you-incorporate-them-into-your-exercise-routine-228520">original article</a>. </div>

Body

Only walking for exercise? Here’s how to get the most out of it

<a href="https://theconversation.com/profiles/ken-nosaka-169021">Ken Nosaka</a>, <a href="https://theconversation.com/institutions/edith-cowan-university-720">Edith Cowan University</a> We’re living longer than in previous generations, with <a href="https://www.aihw.gov.au/reports/older-people/older-australians/contents/demographic-profile">one in eight</a> elderly Australians now aged over 85. But the current <a href="https://pubmed.ncbi.nlm.nih.gov/26561272/">gap</a> between life expectancy (“lifespan”) and health-adjusted life expectancy (“healthspan”) is about ten years. This means many of us live with significant health problems in our later years. To increase our healthspan, we need planned, structured and regular physical activity (or exercise). The <a href="https://www.who.int/news-room/fact-sheets/detail/physical-activity">World Health Organization recommends</a> 150–300 minutes of moderate-intensity exercise – such as brisk walking, cycling and swimming – per week and muscle strengthening twice a week. Yet few of us meet these recommendations. <a href="https://doi.org/10.1186/s12966-019-0797-2">Only 10%</a> meet the strength-training recommendations. <a href="https://pubmed.ncbi.nlm.nih.gov/32488898/">Lack of time</a> is one of the most common reasons. Walking is cost-effective, doesn’t require any special equipment or training, and can be done with small pockets of time. <a href="https://link.springer.com/epdf/10.1007/s00421-024-05453-y?sharing_token=1vDsDJTN5WzPxi5YmSEkOfe4RwlQNchNByi7wbcMAY5hnPeFvF3FY4v2z1P9M2M0oiR78kXv1Yzj0ODMgckqhKOGHUABEd9UOPOfV5kPAj1jf1IYMIYkdIBv-DUEcKCOiDdNyj6MFypeDhSyeYQrWu_bvlAYtPUmOSaldFpmycA%3D">Our preliminary research</a>, published this week, shows there are ways to incorporate strength-training components into walking to improve your muscle strength and balance. <h2>Why walking isn’t usually enough</h2> Regular walking <a href="http://theconversation.com/health-check-in-terms-of-exercise-is-walking-enough-78604">does not appear</a> to work as muscle-strengthening exercise. In contrast, exercises consisting of “eccentric” or muscle-lengthening contractions <a href="http://theconversation.com/its-ok-to-aim%20lower-with-your-new-years-exercise-resolutions-a-few-minutes-a-day-can-improve-your-muscle-strength-193713">improve</a> muscle strength, <a href="https://pubmed.ncbi.nlm.nih.gov/31130877/">prevent muscle wasting</a> and improve other functions such as balance and flexibility. Typical eccentric contractions are seen, for example, when we sit on a chair slowly. The front thigh muscles lengthen with force generation. <h2>Our research</h2> Our <a href="https://pubmed.ncbi.nlm.nih.gov/31055678/">previous research</a> found body-weight-based eccentric exercise training, such as sitting down on a chair slowly, improved lower limb muscle strength and balance in healthy older adults. We also <a href="https://pubmed.ncbi.nlm.nih.gov/28291022/">showed</a> walking down stairs, with the front thigh muscles undergoing eccentric contractions, increased leg muscle strength and balance in older women more than walking up stairs. When climbing stairs, the front thigh muscles undergo “concentric” contractions, with the muscles shortening. It can be difficult to find stairs or slopes suitable for eccentric exercises. But if they could be incorporated into daily walking, lower limb muscle strength and balance function could be improved. This is where the idea of “eccentric walking” comes into play. This means inserting lunges in conventional walking, in addition to downstairs and downhill walking. <figure><iframe src="https://www.youtube.com/embed/wAI7z3XdY9o?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption>Eccentric walking means incorporating deep lunges into your movement.</figcaption></figure> In our <a href="https://link.springer.com/epdf/10.1007/s00421-024-05453-y?sharing_token=1vDsDJTN5WzPxi5YmSEkOfe4RwlQNchNByi7wbcMAY5hnPeFvF3FY4v2z1P9M2M0oiR78kXv1Yzj0ODMgckqhKOGHUABEd9UOPOfV5kPAj1jf1IYMIYkdIBv-DUEcKCOiDdNyj6MFypeDhSyeYQrWu_bvlAYtPUmOSaldFpmycA%3D">new research</a>, published in the European Journal of Applied Physiology, we investigated the effects of eccentric walking on lower limb muscle strength and balance in 11 regular walkers aged 54 to 88 years. The intervention period was 12 weeks. It consisted of four weeks of normal walking followed by eight weeks of eccentric walking. The number of eccentric steps in the eccentric walking period gradually increased over eight weeks from 100 to 1,000 steps (including lunges, downhill and downstairs steps). Participants took a total of 3,900 eccentric steps over the eight-week eccentric walking period while the total number of steps was the same as the previous four weeks. We measured the thickness of the participants’ front thigh muscles, muscle strength in their knee, their balance and endurance, including how many times they could go from a sitting position to standing in 30 seconds without using their arms. We took these measurements before the study started, at four weeks, after the conventional walking period, and at four and eight weeks into the eccentric walking period. We also tested their cognitive function using a digit symbol-substitution test at the same time points of other tests. And we asked participants to complete a questionnaire relating to their activities of daily living, such as dressing and moving around at home. Finally, we tested participants’ blood sugar, cholesterol levels and complement component 1q (C1q) concentrations, a potential <a href="https://faseb.onlinelibrary.wiley.com/doi/abs/10.1096/fj.14-262154">marker of sarcopenia</a> (muscle wasting with ageing). <h2>What did we find?</h2> We found no significant changes in any of the outcomes in the first four weeks when participants walked conventionally. From week four to 12, we found significant improvements in muscle strength (19%), chair-stand ability (24%), balance (45%) and a cognitive function test (21%). Serum C1q concentration decreased by 10% after the eccentric walking intervention, indicating participants’ muscles were effectively stimulated. The sample size of the study was small, so we need larger and more comprehensive studies to verify our findings and investigate whether eccentric walking is effective for sedentary people, older people, how the different types of eccentric exercise compare and the potential cognitive and mental health benefits. But, in the meantime, “eccentric walking” appears to be a beneficial exercise that will extend your healthspan. It may look a bit eccentric if we insert lunges while walking on the street, but the more people do it and benefit from it, the less eccentric it will become. <img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/224159/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/ken-nosaka-169021">Ken Nosaka</a>, Professor of Exercise and Sports Science, <a href="https://theconversation.com/institutions/edith-cowan-university-720">Edith Cowan University</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/only-walking-for-exercise-heres-how-to-get-the-most-out-of-it-224159">original article</a>.

Body

Running or yoga can help beat depression, research shows – even if exercise is the last thing you feel like

<a href="https://theconversation.com/profiles/michael-noetel-147460">Michael Noetel</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> At least <a href="https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2021.665019/full">one in ten people</a> have depression at some point in their lives, with some estimates <a href="https://www.sciencedirect.com/science/article/pii/S0749379720301793">closer to one in four</a>. It’s one of the worst things for someone’s wellbeing – worse than <a href="https://www.happinessresearchinstitute.com/_files/ugd/928487_4a99b6e23f014f85b38495b7ab1ac24b.pdf">debt, divorce or diabetes</a>. <a href="https://theconversation.com/why-are-so-many-australians-taking-antidepressants-221857">One in seven</a> Australians take antidepressants. Psychologists are in <a href="https://theconversation.com/we-cant-solve-australias-mental-health-emergency-if-we-dont-train-enough-psychologists-here-are-5-fixes-190135">high demand</a>. Still, only <a href="http://dx.doi.org/10.1371/journal.pmed.1003901">half</a> of people with depression in high-income countries get treatment. Our <a href="https://www.bmj.com/content/384/bmj-2023-075847">new research</a> shows that exercise should be considered alongside therapy and antidepressants. It can be just as impactful in treating depression as therapy, but it matters what type of exercise you do and how you do it. <h2>Walk, run, lift, or dance away depression</h2> We found 218 randomised trials on exercise for depression, with 14,170 participants. We analysed them using a method called a network meta-analysis. This allowed us to see how different types of exercise compared, instead of lumping all types together. We found walking, running, strength training, yoga and mixed aerobic exercise were about as effective as <a href="https://theconversation.com/explainer-what-is-cognitive-behaviour-therapy-37351">cognitive behaviour therapy</a> – one of the <a href="https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2018.00004/full">gold-standard treatments</a> for depression. The effects of dancing were also powerful. However, this came from analysing just five studies, mostly involving young women. Other exercise types had more evidence to back them. Walking, running, strength training, yoga and mixed aerobic exercise seemed more effective than antidepressant medication alone, and were about as effective as exercise alongside antidepressants. But of these exercises, people were most likely to stick with strength training and yoga. <iframe id="cZaWb" class="tc-infographic-datawrapper" style="border: none;" src="https://datawrapper.dwcdn.net/cZaWb/2/" width="100%" height="400px" frameborder="0"></iframe> Antidepressants certainly help <a href="https://www.thelancet.com/article/S0140-6736(17)32802-7/fulltext">some people</a>. And of course, anyone getting treatment for depression should talk to their doctor <a href="https://australia.cochrane.org/news/new-cochrane-review-explores-latest-evidence-approaches-stopping-long-term-antidepressants">before changing</a> what they are doing. Still, our evidence shows that if you have depression, you should get a psychologist and an exercise plan, whether or not you’re taking antidepressants. <h2>Join a program and go hard (with support)</h2> Before we analysed the data, we thought people with depression might need to “ease into it” with generic advice, <a href="https://www.who.int/initiatives/behealthy/physical-activity">such as</a> “some physical activity is better than doing none.” But we found it was far better to have a clear program that aimed to push you, at least a little. Programs with clear structure worked better, compared with those that gave people lots of freedom. Exercising by yourself might also make it hard to set the bar at the right level, given low self-esteem is a symptom of depression. We also found it didn’t matter how much people exercised, in terms of sessions or minutes a week. It also didn’t really matter how long the exercise program lasted. What mattered was the intensity of the exercise: the higher the intensity, the better the results. <h2>Yes, it’s hard to keep motivated</h2> We should exercise caution in interpreting the findings. Unlike drug trials, participants in exercise trials know which “treatment” they’ve been randomised to receive, so this may skew the results. Many people with depression have physical, psychological or social barriers to participating in formal exercise programs. And getting support to exercise isn’t free. We also still don’t know the best way to stay motivated to exercise, which can be even harder if you have depression. Our study tried to find out whether things like setting exercise goals helped, but we couldn’t get a clear result. Other reviews found it’s important to have a <a href="https://pubmed.ncbi.nlm.nih.gov/31923898/">clear action plan</a> (for example, putting exercise in your calendar) and to <a href="https://pubmed.ncbi.nlm.nih.gov/19916637/">track your progress</a> (for example, using an app or smartwatch). But predicting which of these interventions work is notoriously difficult. A <a href="https://www.nature.com/articles/s41586-021-04128-4">2021 mega-study</a> of more than 60,000 gym-goers <a href="https://www.nature.com/articles/s41586-021-04128-4/figures/1">found</a> experts struggled to predict which strategies might get people into the gym more often. Even making workouts fun didn’t seem to motivate people. However, listening to audiobooks while exercising helped a lot, which no experts predicted. Still, we can be confident that people benefit from personalised support and accountability. The support helps overcome the hurdles they’re sure to hit. The accountability keeps people going even when their brains are telling them to avoid it. So, when starting out, it seems wise to avoid going it alone. Instead: <ul> <li> join a fitness group or yoga studio </li> <li> get a trainer or an exercise physiologist </li> <li> ask a friend or family member to go for a walk with you. </li> </ul> Taking a few steps towards getting that support makes it more likely you’ll keep exercising. <h2>Let’s make this official</h2> Some countries see exercise as a backup plan for treating depression. For example, the American Psychological Association only <a href="https://www.apa.org/depression-guideline/">conditionally recommends</a> exercise as a “complementary and alternative treatment” when “psychotherapy or pharmacotherapy is either ineffective or unacceptable”. Based on our research, this recommendation is withholding a potent treatment from many people who need it. In contrast, The Royal Australian and New Zealand College of Psychiatrists <a href="https://www.ranzcp.org/getmedia/a4678cf4-91f5-4746-99d4-03dc7379ae51/mood-disorders-clinical-practice-guideline-2020.pdf">recommends</a> vigorous aerobic activity at least two to three times a week for all people with depression. Given how common depression is, and the number failing to receive care, other countries should follow suit and recommend exercise alongside front-line treatments for depression. I would like to acknowledge my colleagues Taren Sanders, Chris Lonsdale and the rest of the coauthors of the paper on which this article is based. If this article has raised issues for you, or if you’re concerned about someone you know, call Lifeline on 13 11 14.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/223441/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/michael-noetel-147460">Michael Noetel</a>, Senior Lecturer in Psychology, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/running-or-yoga-can-help-beat-depression-research-shows-even-if-exercise-is-the-last-thing-you-feel-like-223441">original article</a>.

Body

Thinking of using an activity tracker to achieve your exercise goals? Here’s where it can help – and where it probably won’t

<a href="https://theconversation.com/profiles/corneel-vandelanotte-209636">Corneel Vandelanotte</a>, <a href="https://theconversation.com/institutions/cquniversity-australia-2140">CQUniversity Australia</a> It’s that time of year when many people are getting started on their resolutions for the year ahead. Doing more physical activity is a popular and <a href="https://link.springer.com/article/10.1007/s13668-016-0175-5">worthwhile</a> goal. If you’re hoping to be more active in 2024, perhaps you’ve invested in an activity tracker, or you’re considering buying one. But what are the benefits of activity trackers? And will a basic tracker do the trick, or do you need a fancy one with lots of features? Let’s take a look. <h2>Why use an activity tracker?</h2> One of the <a href="https://doi.org/10.1186/s12966-020-01001-x">most powerful predictors</a> for being active is whether or not <a href="https://www.sciencedirect.com/science/article/abs/pii/S0140673621026301">you are monitoring</a> how active you are. Most people have a vague idea of how active they are, but this is inaccurate a lot of the time. Once people consciously start to keep track of how much activity they do, they often realise it’s less than what they thought, and this motivates them to be more active. You can self-monitor without an activity tracker (just by writing down what you do), but this method is hard to keep up in the long run and it’s also a lot less accurate compared to devices that track your every move 24/7. By tracking steps or “activity minutes” you can ascertain whether or not you are meeting the <a href="https://www.health.gov.au/topics/physical-activity-and-exercise/physical-activity-and-exercise-guidelines-for-all-australians/for-adults-18-to-64-years">physical activity guidelines</a> (150 minutes of moderate to vigorous physical activity per week). It also allows you to track how you’re progressing with any personal activity goals, and view your progress over time. All this would be difficult without an activity tracker. Research has shown the most popular brands of activity trackers are generally reliable when it comes to tracking basic measures such as <a href="https://doi.org/10.2196/18694">steps</a> and <a href="https://doi.org/10.1123/jmpb.2019-0072">activity minutes</a>. <h2>But wait, there’s more</h2> Many activity trackers on the market nowadays track a range of other measures which their manufacturers promote as important in monitoring health and fitness. But is this really the case? Let’s look at some of these. Resting heart rate This is your heart rate at rest, which is normally somewhere <a href="https://www.healthdirect.gov.au/resting-heart-rate">between 60 and 100 beats per minute</a>. Your resting heart rate will gradually go down as you become fitter, especially if you’re doing a lot of high-intensity exercise. Your risk of dying of any cause (all-cause mortality) is much lower when you have a <a href="https://pubmed.ncbi.nlm.nih.gov/28552551/">low resting heart rate</a>. So, it is useful to keep an eye on your resting heart rate. Activity trackers are pretty good at tracking it, but you can also easily measure your heart rate by monitoring your pulse and using a stopwatch. Heart rate during exercise Activity trackers will also measure your heart rate when you’re active. To improve fitness efficiently, professional athletes focus on having their heart rate in certain “<a href="https://chhs.source.colostate.edu/how-to-target-heart-rate-training-zones-effectively/">zones</a>” when they’re exercising – so knowing their heart rate during exercise is important. But if you just want to be more active and healthier, without a specific training goal in mind, you can exercise at a level that feels good to you and not worry about your heart rate during activity. The <a href="https://doi.org/10.1097/HCO.0000000000000437">most important thing</a> is that you’re being active. Also, a dedicated heart rate monitor with a strap around your chest will do a much better job at measuring your actual heart rate <a href="https://doi.org/10.1038/s41746-020-0226-6">compared</a> to an activity tracker worn around your wrist. Maximal heart rate This is the hardest your heart could beat when you’re active, not something you could sustain very long. Your maximal heart rate is not influenced by how much exercise you do, or your fitness level. Most activity trackers <a href="https://jamanetwork.com/journals/jamacardiology/article-abstract/2566167">don’t measure it accurately</a> anyway, so you might as well forget about this one. VO₂max Your muscles need oxygen to work. The more oxygen your body can process, the harder you can work, and therefore the fitter you are. VO₂max is the volume (V) of oxygen (O₂) we could breathe maximally (max) over a one minute interval, expressed as millilitres of oxygen per kilogram of body weight per minute (ml/kg/min). Inactive women and men would have a VO₂max lower than 30 and 40 ml/kg/min, respectively. A reasonably good VO₂max would be mid thirties and higher for women and mid forties and higher for men. VO₂max is another measure of fitness that <a href="https://doi.org/10.1001/jamanetworkopen.2018.3605">correlates well</a> with all-cause mortality: the higher it is, the lower your risk of dying. For athletes, VO₂max is usually measured in a lab on a treadmill while wearing a mask that measures oxygen consumption. Activity trackers instead look at your running speed (using a GPS chip) and your heart rate and compare these measures to values from other people. If you can run fast with a low heart rate your tracker will assume you are relatively fit, resulting in a higher VO₂max. These estimates are <a href="https://doi.org/10.1007/s40279-021-01639-y">not very accurate</a> as they are based on lots of assumptions. However, the error of the measurement is reasonably consistent. This means if your VO₂max is gradually increasing, you are likely to be getting fitter. So what’s the take-home message? Focus on how many steps you take every day or the number of activity minutes you achieve. Even a basic activity tracker will measure these factors relatively accurately. There is no real need to track other measures and pay more for an activity tracker that records them, unless you are getting really serious about exercise.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/219235/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/corneel-vandelanotte-209636">Corneel Vandelanotte</a>, Professorial Research Fellow: Physical Activity and Health, <a href="https://theconversation.com/institutions/cquniversity-australia-2140">CQUniversity Australia</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/thinking-of-using-an-activity-tracker-to-achieve-your-exercise-goals-heres-where-it-can-help-and-where-it-probably-wont-219235">original article</a>.

Body

Why you shouldn’t let guilt motivate you to exercise

<a href="https://theconversation.com/profiles/martin-j-turner-489218">Martin J Turner</a>, <a href="https://theconversation.com/institutions/manchester-metropolitan-university-860">Manchester Metropolitan University</a> and <a href="https://theconversation.com/profiles/anthony-miller-679114">Anthony Miller</a>, <a href="https://theconversation.com/institutions/staffordshire-university-1381">Staffordshire University</a> The hardest part of consistently exercising is finding the motivation to do it. But using the wrong type of motivation for your workouts could militate against you – and could even have consequences for your mental health. Our research, which <a href="https://www.tandfonline.com/doi/full/10.1080/02640414.2022.2042124">investigated the motivations</a> of 650 frequent exercisers, found that people who believed things like “I am a loser if I do not succeed in things that matter to me” and “I have to be viewed favourably by people that matter to me” were more likely to use self-pressure and wanting to avoid guilt as motivation to exercise. Not only was this group more likely to not want to exercise at all, we also found that those who used guilt and self-pressure as motivation were at greater risk of experiencing poor mental health. The tendency to hold dogmatic beliefs like “I must” or “I have to”, and harmful beliefs about yourself creates a negative and <a href="https://www.tandfonline.com/doi/full/10.1080/10413200.2018.1446472?casa_token=ObBghnn3ab4AAAAA%3ATpiEvunYBqKbIqI2_kuC5fM2zMvhhYLP72TVplW3Noc4PYhQUaMBkq1pEabaXXid0hwnE3R5kNYvnA">unhealthy approach to exercise</a>. But the darker side of this mindset is that people who held these beliefs reported higher symptoms of anxiety, depression and stress compared with exercisers who didn’t use self-pressure and guilt as motivation. While it’s possible that people already experiencing poor mental health would be more likely to have negative beliefs about themselves, there’s a deeply reciprocal relationship between mental health and how we think and act. Research shows that extreme, rigid, negative ways of thinking are <a href="https://pubmed.ncbi.nlm.nih.gov/26609889/">risk factors for mental health problems</a>. Repeating negative thoughts many times, over many years, can lead to deep self-loathing which can corrode your <a href="https://psycnet.apa.org/record/2019-59628-001">mental health</a> and leave you in a continuous state of <a href="https://www.tandfonline.com/doi/pdf/10.1080/02640414.2022.2042124">stress and depression</a>. It can also make you even less likely to positively change your thinking and <a href="https://journals.humankinetics.com/view/journals/tsp/8/3/article-p248.xml">exercise habits</a>. On the other hand, our study found that people who reported lower symptoms of depression, anxiety and stress had significantly less extreme, rigid and negative ways of thinking. These participants were less likely to endorse ways of thinking that involved self-demands (“I must”), magnification (“things are awful”), and self-condemnation (“I am a failure”). These exercisers reported using more useful forms of motivation to workout, such as exercising because they loved the activity and recognised the value and importance of exercise as a part of their identity. These findings show us just how important the thoughts you use to motivate your workouts can be, especially when it comes to your mental health. One solution to these ways of thinking is a psychological approach called <a href="https://www.frontiersin.org/articles/10.3389/fpsyg.2016.01423/full">rational emotive behaviour therapy</a> (REBT). REBT aims to understand and challenge deeply held beliefs and develop helpful alternatives. This approach may help an exerciser go from “I have to exercise” and “I’d be worthless if I didn’t exercise” to thinking “I really want to exercise, but if I didn’t exercise, I would be disappointed, but I would not be worthless.” Improving a person’s beliefs about exercise can change their motivation from being centred on self-pressure and guilt to seeing the value and potential enjoyment in working out. There are many <a href="https://www.amazon.co.uk/Rational-Practitioner-Performance-Psychologists-Practicing/dp/1032060409">ideas and tools</a> we can apply from REBT even without having to step foot inside a psychologist’s office. So if you find yourself falling into this cycle of self-loathing and losing motivation to exercise, here’s what you can do. <h2>Think critically about your thinking</h2> When you think about exercising, are your thoughts negative, unhelpful and self-pressuring? Be more critical of your thoughts about exercise, and ask yourself whether they make sense – and if they’re helping you. If the answer is no, try to work on adopting thoughts that do make sense and help you achieve your exercise goals, such as seeing exercise as something to enjoy, instead of something you have to do out of guilt. Being able to challenge your own unhelpful beliefs, and learning to harness more helpful ones, can help you <a href="https://onlinelibrary.wiley.com/doi/pdf/10.1111/sms.12926?casa_token=fbVymZ3SxrAAAAAA:SiNRAlz0Xh11xbeWDUtxjwlP40gDfurptgas5SSHYLtLD9v06uLm8ztlTvi1AnwTSvTReT_u-fdgiJ0h">achieve your goals</a>. <h2>Realise you’re not what you do</h2> As human beings, we’re imperfect. We mess up – but we also do great things. When things don’t go to plan, it’s important to try and accept this. And remember that failing doesn’t mean you’re a failure. Realise that you aren’t <a href="https://www.sciencedirect.com/science/article/pii/S1469029222001662">defined by your shortcomings</a>. Recognising that failing does not make you a failure may help you better bounce back from times when you fall short of your goals and expectations and keep on track with reaching your goals and finding solutions. <h2>Harness the power of want</h2> You’re far more likely to stick to your exercise goals if you <a href="https://selfdeterminationtheory.org/SDT/documents/1997_RyanFrederickLepesRubioSheldon.pdf">want to do them</a>. Find an activity that offers you something more than just exercise. Perhaps join an exercise group where you can make new friends or rekindle your passion for something you used to do. If you’re only exercising because you believe you have to or to avoid guilt, then you probably won’t stick with it. Nobody likes to be pressured into doing difficult things. Finding an activity you don’t have to force yourself to do may help you move from seeing exercise as something you have to do to something you love to do. Exercise is, of course, important, but guilting yourself into doing it will probably do more harm than good. The best way is by finding things you enjoy, accepting yourself unconditionally if your motivation does wane, and removing “have to” from your thoughts about exercise.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/220342/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/martin-j-turner-489218">Martin J Turner</a>, Reader in Psychology, <a href="https://theconversation.com/institutions/manchester-metropolitan-university-860">Manchester Metropolitan University</a> and <a href="https://theconversation.com/profiles/anthony-miller-679114">Anthony Miller</a>, Senior Lecturer in Sport and Exercise Psychology, <a href="https://theconversation.com/institutions/staffordshire-university-1381">Staffordshire University</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/why-you-shouldnt-let-guilt-motivate-you-to-exercise-220342">original article</a>.

Body

Resistance (exercise) is far from futile: The unheralded benefits of weight training

<a href="https://theconversation.com/profiles/stuart-phillips-428766">Stuart Phillips</a>, <a href="https://theconversation.com/institutions/mcmaster-university-930">McMaster University</a> Everyone can agree that exercise is healthy. Among its many benefits, exercise improves heart and brain function, aids in controlling weight, slows the effects of aging and helps lower the risks of several chronic <a href="https://doi.org/10.1101%2Fcshperspect.a029694">diseases</a>. For too long, though, one way of keeping fit, aerobic exercise, has been perceived as superior to the other, resistance training, for promoting health when, in fact, they are equally valuable, and both can get us to the same goal of overall physical fitness. Aerobic exercise such as running, swimming and cycling is popular because it provides great benefits and with ample <a href="https://doi.org/10.1371/journal.pmed.1001335">scientific evidence</a> to back that up. What has been far less influential to date is that resistance training — whether that’s with dumbbells, weightlifting machines or good old push-ups, lunges and dips — works about as well as aerobic exercise in all the critical areas, including cardiovascular health. Resistance training provides another benefit: building strength and developing power, which become increasingly important as a <a href="https://doi.org/10.1007/s12603-021-1665-8">person ages</a>. <figure><iframe src="https://player.vimeo.com/video/843867756" width="500" height="281" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption>Video about different forms of resistance training explores how all are effective at building strength.</figcaption></figure> Building and maintaining muscle strength keeps us springing out of our chairs, maintaining our balance and posture and firing our metabolism, as my colleagues and I explain in a paper recently <a href="https://doi.org/10.1249/FIT.0000000000000916">published</a> by the American College of Sports Medicine. So, if aerobic exercise and resistance training offer roughly equal benefits, how did we end up with so many runners and cyclists compared to weightlifters? It was a combination of timing, marketing and stereotyping. <h2>The rise of aerobics</h2> The preference for aerobic exercise dates back to landmark research from the <a href="https://www.cooperinstitute.org/research/ccls">Cooper Centre Longitudinal Study</a>, which played a pivotal role in establishing the effectiveness of aerobics — Dr. Ken Cooper invented or at least popularized the word with his book <a href="https://www.cooperaerobics.com/About/Aerobics.aspx">Aerobics</a>, spurring desk-bound Baby Boomers to take up exercise for its own sake. Meanwhile, resistance training languished, <a href="https://www.cnet.com/health/fitness/does-lifting-weights-make-women-bulky/">especially among women</a>, due to the misguided notion that weightlifting was only for men who aspired to be hyper-muscular. <a href="https://www.britannica.com/biography/Charles-Atlas">Charles Atlas</a>, anyone? Cultural influences solidified the dominance of aerobic exercise in the fitness landscape. In 1977, Jim Fixx made running and jogging popular with <a href="https://en.wikipedia.org/wiki/The_Complete_Book_of_Running">The Complete Book of Running</a>. In the 1980s, Jane Fonda’s <a href="https://www.janefonda.com/shop/fitness-videos/jane-fondas-complete-workout/">Complete Workout</a> and exercise shows such as <a href="https://www.imdb.com/title/tt0268895/">Aerobicize</a> and the <a href="https://www.imdb.com/title/tt0299431/">20 Minute Workout</a> helped solidify the idea that exercise was about raising one’s heart rate. The very word “aerobic,” previously confined to the lexicon of science and medicine, entered popular culture about the same time as leg warmers, tracksuits and sweatbands. It made sense to many that breathing hard and sweating from prolonged, vigorous movement was the best way to benefit from exercising. All the while, resistance training was waiting for its turn in the spotlight. <h2>Recognizing the value of resistance</h2> If aerobics has been the hare, resistance training has been the tortoise. Weight training is now coming up alongside and preparing to overtake its speedy rival, as athletes and everyday people alike recognize the value that was always there. Even in high-level sports training, weightlifting did not become common until the last 20 years. Today, it strengthens the bodies and lengthens the careers of soccer stars, tennis players, golfers <a href="https://doi.org/10.1007/s40279-016-0486-0">and many more</a>. Rising popular interest in resistance training owes a debt to <a href="https://www.livestrong.com/article/545200-the-fall-of-fitness/">CrossFit</a>, which, despite its controversies, has helped break down stereotypes and introduced more people, particularly women, to the practice of lifting weights. It’s important to recognize that resistance training does not invariably lead to bulking up, nor does it demand lifting heavy weights. As our team’s research has shown, lifting lighter weights to the point of failure in multiple sets provides <a href="https://journals.physiology.org/doi/full/10.1152/japplphysiol.00154.2016">equal benefits</a>. <h2>Strength and ageing</h2> The merits of resistance training extend beyond improving muscle strength. It addresses a critical aspect often overlooked in traditional aerobic training: the ability to exert force quickly, or what’s called power. As people age, activities of daily living such as standing up, sitting down and climbing stairs demand <a href="https://doi.org/10.1186/s11556-022-00297-x">strength and power</a> more than cardiovascular endurance. In this way, resistance training can be vital to maintaining overall functionality and independence. <h2>Redefining the fitness narrative</h2> The main idea is not to pit resistance training against aerobic exercise but to recognize that they complement each other. Engaging in both forms of exercise is better than relying on one alone. The <a href="https://doi.org/10.1161/CIR.0000000000001189">American Heart Association</a> recently stated that “…resistance training is a safe and effective approach for improving cardiovascular health in adults with and without cardiovascular disease.” Adopting a nuanced perspective is essential, especially when we guide <a href="https://doi.org/10.1016/j.arr.2021.101368">older individuals</a> who may associate exercise primarily with walking and not realize the limitations imposed by neglecting strength and power training. Resistance training is not a one-size-fits-all endeavour. It encompasses a <a href="https://doi.org/10.1016/j.jshs.2023.06.005">spectrum of activities</a> tailored to individual capabilities. It’s time to redefine the narrative around fitness to make more room for resistance training. It’s not necessary to treat it as a replacement for aerobic exercise but to see it as a vital component of a holistic approach to <a href="https://doi.org/10.1249/ESM.0000000000000001">health and longevity</a>. By shedding stereotypes, demystifying the process and promoting inclusivity, resistance training can become more accessible and appealing to a broader audience, ultimately leading to a new way to perceive and prioritize the benefits of this form of training for <a href="https://doi.org/10.1136/bjsports-2021-105061">health and fitness</a>.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/220269/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/stuart-phillips-428766">Stuart Phillips</a>, Professor, Kinesiology, Tier 1 Canada Research Chair in Skeletal Muscle Health, <a href="https://theconversation.com/institutions/mcmaster-university-930">McMaster University</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/resistance-exercise-is-far-from-futile-the-unheralded-benefits-of-weight-training-220269">original article</a>.

Body

Why are my muscles sore after exercise? Hint: it’s nothing to do with lactic acid

<a href="https://theconversation.com/profiles/robert-andrew-robergs-435390">Robert Andrew Robergs</a>, <a href="https://theconversation.com/institutions/queensland-university-of-technology-847">Queensland University of Technology</a> and <a href="https://theconversation.com/profiles/samuel-l-torrens-1476404">Samuel L. Torrens</a>, <a href="https://theconversation.com/institutions/queensland-university-of-technology-847">Queensland University of Technology</a> As many of us hit the gym or go for a run to recover from the silly season, you might notice a bit of extra muscle soreness. This is especially true if it has been a while between workouts. A common misunderstanding is that such soreness is due to lactic acid build-up in the muscles. Research, however, shows lactic acid has <a href="https://journals.physiology.org/doi/full/10.1152/physiol.00033.2017">nothing to do with it</a>. The truth is far more interesting, but also a bit more complex. <h2>It’s not lactic acid</h2> We’ve known for decades that lactic acid has <a href="https://pubmed.ncbi.nlm.nih.gov/27409551/">nothing to do with</a> muscle soreness after exercise. In fact, as one of us (Robert Andrew Robergs) has long <a href="https://journals.physiology.org/doi/full/10.1152/ajpregu.00114.2004">argued</a>, cells produce lactate, not lactic acid. This process actually <a href="https://journals.physiology.org/doi/full/10.1152/physiol.00033.2017">opposes</a> not causes the build-up of acid in the muscles and bloodstream. Unfortunately, historical inertia means people still use the term “lactic acid” in relation to exercise. Lactate <a href="https://www.science.org/doi/10.1126/science.1101141">doesn’t cause major problems</a> for the muscles you use when you exercise. You’d probably be <a href="https://journals.physiology.org/doi/full/10.1152/ajpregu.00114.2004?url_ver=Z39.88-2003&rfr_id=ori%3Arid%3Acrossref.org&rfr_dat=cr_pub++0pubmed&">worse off</a> without it due to other benefits to your working muscles. Lactate isn’t the reason you’re sore a few days after upping your weights or exercising after a long break. So, if it’s not lactic acid and it’s not lactate, what is causing all that muscle soreness? <h2>Muscle pain during and after exercise</h2> When you exercise, a lot of chemical reactions occur in your muscle cells. All these chemical reactions accumulate products and by-products which cause water to enter into the cells. That causes the pressure inside and between muscle cells to increase. This pressure, combined with the movement of molecules from the muscle cells can stimulate nerve endings and cause <a href="https://www.sportsmed.theclinics.com/article/S0278-5919(11)00099-8/fulltext">discomfort</a> during exercise. The pain and discomfort you sometimes feel hours to days after an unfamiliar type or amount of exercise has a different list of causes. If you exercise beyond your usual level or routine, you can cause microscopic damage to your muscles and their connections to tendons. Such damage causes the release of ions and other molecules from the muscles, causing localised swelling and stimulation of nerve endings. This is sometimes known as “<a href="https://www.sportsmed.theclinics.com/article/S0278-5919(11)00099-8/fulltext">delayed onset muscle soreness</a>” or DOMS. While the damage occurs during the exercise, the resulting response to the injury builds over the next one to two days (longer if the damage is severe). This can sometimes cause pain and difficulty with normal movement. <h2>The upshot</h2> Research is clear; the discomfort from delayed onset muscle soreness has nothing to do with <a href="https://scholar.google.com/citations?user=UVjRNSUAAAAJ&view_op=view_citation&citation_for_view=UVjRNSUAAAAJ:J_g5lzvAfSwC">lactate</a> or <a href="https://journals.physiology.org/doi/full/10.1152/physiol.00033.2017">lactic acid</a>. The good news, though, is that your muscles adapt rapidly to the activity that would initially cause delayed onset muscle soreness. So, assuming you don’t wait too long (more than roughly two weeks) before being active again, the next time you do the same activity there will be much less damage and discomfort. If you have an exercise goal (such as doing a particular hike or completing a half-marathon), ensure it is realistic and that you can work up to it by training over several months. Such training will gradually build the muscle adaptations necessary to prevent delayed onset muscle soreness. And being less wrecked by exercise makes it more enjoyable and more easy to stick to a routine or habit. Finally, remove “lactic acid” from your exercise vocabulary. Its supposed role in muscle soreness is a myth that’s hung around far too long already.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/214638/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/robert-andrew-robergs-435390">Robert Andrew Robergs</a>, Associate Professor - Exercise Physiology, <a href="https://theconversation.com/institutions/queensland-university-of-technology-847">Queensland University of Technology</a> and <a href="https://theconversation.com/profiles/samuel-l-torrens-1476404">Samuel L. Torrens</a>, PhD Candidate, <a href="https://theconversation.com/institutions/queensland-university-of-technology-847">Queensland University of Technology</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/why-are-my-muscles-sore-after-exercise-hint-its-nothing-to-do-with-lactic-acid-214638">original article</a>.

Body

How 22 minutes of exercise a day could reduce the health risks from sitting too long

<a href="https://theconversation.com/profiles/matthew-ahmadi-1241767">Matthew Ahmadi</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> and <a href="https://theconversation.com/profiles/emmanuel-stamatakis-161783">Emmanuel Stamatakis</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> People in developed countries spend an average of <a href="https://doi.org/10.1136/bjsports-2022-106568">nine to ten hours</a> a day sitting. Whether it’s spending time in front of a computer, stuck in traffic, or unwinding in front of the TV, our lives have become increasingly sedentary. This is concerning because prolonged time spent sitting is <a href="https://bjsm.bmj.com/content/54/24/1451?s=09&int_source=trendmd&int_medium=cpc&int_campaign=usage-042019">linked to a number of health issues</a> including obesity, heart disease, and certain types of cancers. These health issues can contribute to earlier death. But a <a href="https://doi.org/10.1136/bjsports-2022-106568">new study</a> suggests that for people over 50, getting just 22 minutes of exercise a day can lower the increased risk of premature death from a highly sedentary lifestyle. <h2>What the researchers did</h2> The team combined data from two studies from Norway, one from Sweden and one from the United States. The studies included about 12,000 people aged 50 or older who wore wearable devices to track how active and sedentary they were during their daily routines. Participants were followed up for at least two years (the median was 5.2 years) during the study period, which spanned 2003-2020. Analyses took several lifestyle and health factors into account, such as education, alcohol intake, smoking status, and previous history of heart disease, cancer and diabetes. All this data was linked to national death registries. <h2>A 22 minute threshold</h2> A total of 805 participants died during follow up. The researchers found people who were sedentary for more than 12 hours a day had the highest risk of death (a 38% higher risk than people who were sedentary for eight hours). However, this was only observed in those who did less than 22 minutes of moderate to vigorous physical activity daily. So for people who did more than 22 minutes of exercise, there was no longer a significantly heightened risk – that is, the risk became generally similar to those who were sedentary for eight hours. Higher daily duration of physical activity was consistently associated with lower risk of death, regardless of total sedentary time. For example, the team reported an additional ten minutes of moderate to vigorous physical activity each day could lower mortality risk by up to 15% for people who were sedentary less than 10.5 hours a day. For those considered highly sedentary (10.5 hours a day or more), an additional ten minutes lowered mortality risk by up to 35%. <h2>The study had some limitations</h2> The team couldn’t assess how changes in physical activity or sedentary time over several months or years may affect risk of death. And the study included only participants aged 50 and above, making results less applicable to younger age groups. Further, cultural and lifestyle differences between countries may have influenced how data between studies was measured and analysed. Ultimately, because this study was observational, we can’t draw conclusions on cause and effect with certainty. But the results of this research align with a growing body of evidence exploring the relationship between physical activity, sedentary time, and death. <h2>It’s positive news</h2> Research has previously suggested <a href="https://bjsm.bmj.com/content/54/24/1499">physical activity may offset</a> health risks associated with <a href="https://www.jacc.org/doi/abs/10.1016/j.jacc.2019.02.031">high sedentary time</a>. The good news is, even short bouts of exercise can have these positive effects. In this study, the 22 minutes wasn’t necessarily done all at once. It was a total of the physical activity someone did in a day, and would have included incidental exercise (activity that’s part of a daily routine, such as climbing the stairs). Several studies using wearable devices have found short bursts of high-intensity everyday activities such as stair climbing or energetic outdoor home maintenance activities such as mowing the lawn or cleaning the windows can lower <a href="https://www.nature.com/articles/s41591-022-02100-x">mortality</a>, <a href="https://academic.oup.com/eurheartj/article/43/46/4801/6771381">heart disease</a> and <a href="https://jamanetwork.com/journals/jamaoncology/fullarticle/2807734">cancer</a> risk. A recent study using wearable devices found moderate to vigorous bouts of activity <a href="https://www.thelancet.com/journals/lanpub/article/PIIS2468-2667(23)00183-4/fulltext">lasting three to five minutes</a> provide similar benefits to bouts longer than ten minutes when it comes to stroke and heart attack risk. Several other studies have found <a href="https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/2596007">being active just on the weekend</a> provides similar health benefits as <a href="https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/2794038">being active throughout the week</a>. Research has also shown the benefits of <a href="https://jamanetwork.com/journals/jamaneurology/fullarticle/2795819">physical activity</a> and <a href="https://jamanetwork.com/journals/jama/article-abstract/2809418">reducing sedentary time</a> extend to cognitive health. Routines such as desk jobs can foster a sedentary lifestyle that may be difficult to shift. But mixing short bursts of activity into our day can make a significant difference towards improving our health and longevity. Whether it’s a brisk walk during lunch, taking the stairs, or even a short at-home workout, this study is yet another to suggest that every minute counts.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/216259/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/matthew-ahmadi-1241767">Matthew Ahmadi</a>, Postdoctoral Research Fellow, Faculty of Medicine and Health, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> and <a href="https://theconversation.com/profiles/emmanuel-stamatakis-161783">Emmanuel Stamatakis</a>, Professor of Physical Activity, Lifestyle, and Population Health, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/how-22-minutes-of-exercise-a-day-could-reduce-the-health-risks-from-sitting-too-long-216259">original article</a>.

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Treadmill, exercise bike, rowing machine: what’s the best option for cardio at home?

<a href="https://theconversation.com/profiles/lewis-ingram-1427671">Lewis Ingram</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a>; <a href="https://theconversation.com/profiles/hunter-bennett-1053061">Hunter Bennett</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a>, and <a href="https://theconversation.com/profiles/saravana-kumar-181105">Saravana Kumar</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Cardio, short for cardiovascular exercise, refers to any form of rhythmic physical activity that increases your heart rate and breathing so the heart and lungs can deliver oxygen to the working muscles. Essentially, it’s the type of exercise that gets you huffing and puffing – and fills many people with dread. People often do cardio to <a href="https://pubmed.ncbi.nlm.nih.gov/30003901/">lose weight</a>, but it’s associated with a variety of health benefits including reducing the risk of <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6481017/">heart disease</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/30191075/">stroke</a> and <a href="https://pubmed.ncbi.nlm.nih.gov/27707740/">falls</a>. Research shows cardio also improves <a href="https://pubmed.ncbi.nlm.nih.gov/29334638/">cognitive function</a> and <a href="https://pubmed.ncbi.nlm.nih.gov/26978184/">mental health</a>. The <a href="https://www.who.int/news-room/fact-sheets/detail/physical-activity">World Health Organization</a> recommends a minimum of 150 minutes of moderate-intensity or 75 minutes of vigorous-intensity cardio per week. There are many ways to do cardio, from playing a team sport, to riding your bike to work, to going for a jog. If you’re willing and able to invest in a piece of equipment, you can also do cardio at home. The treadmill, stationary bike and rowing machine are the most popular pieces of cardio equipment you’ll find in a typical gym, and you can buy any of these for your home too. Here’s how to know which one is best for you. <h2>The treadmill</h2> In terms of effectiveness of exercise, it’s hard to look past the treadmill. Running uses most of your major muscle groups and therefore leads to greater increases in <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1334197/">heart rate</a> and energy expenditure compared to other activities, such as cycling. As a bonus, since running on a treadmill requires you to support your own body weight, it also helps to build and maintain <a href="https://pubmed.ncbi.nlm.nih.gov/26562001/">your bones</a>, keeping them strong. This becomes even more important <a href="https://www.niams.nih.gov/health-topics/exercise-your-bone-health">as you get older</a> as the risk of developing medical conditions such as osteopenia and osteoporosis – where the density of your bones is reduced – increases. But the treadmill may not be for everyone. The weight-bearing nature of running may exacerbate pain and cause swelling in people with common joint conditions such as osteoarthritis. Also, a treadmill is likely to require greater maintenance (since most treadmills are motorised), and can take up a lot of space. <h2>Stationary bike</h2> The stationary bike provides another convenient means to hit your cardio goals. Setting the bike up correctly is crucial to ensure you are comfortable and to reduce the risk of injury. A general rule of thumb is that you want a slight bend in your knee, as in the picture below, when your leg is at the bottom of the pedal stroke. While cycling has significant benefits for <a href="https://pubmed.ncbi.nlm.nih.gov/21496106/">cardiovascular</a> and metabolic health, since it’s non-weight-bearing it doesn’t benefit your <a href="https://www.sciencedirect.com/science/article/pii/S0026049507003253">bones</a> to the same extent as walking and running. On the flipside, it offers a great cardio workout without stressing your joints. <h2>Rowing machine</h2> If you’re looking to the get the best cardio workout in the least amount of time, the rowing machine might be for you. Because rowing requires you to use all of your major muscle groups including the upper body, your heart and lungs have to work even harder than they do when <a href="https://pubmed.ncbi.nlm.nih.gov/32627051/">running and cycling</a> to <a href="https://pubmed.ncbi.nlm.nih.gov/8325720/">deliver oxygen</a> to those working muscles. This means the energy expended while rowing is comparable to running and <a href="https://pubmed.ncbi.nlm.nih.gov/3193864/">greater than cycling</a>. But before you rush off to buy a new rower, there are two issues to consider. First, the technical challenge of rowing is arguably greater than that of running or cycling, as the skill of rowing is often less familiar to the average person. While a coach or trainer can help with this, just remember a good rowing technique should be felt primarily in your legs, not your arms and back. Second, the non-weight-bearing nature of rowing means it misses out on the same bone health benefits offered by the treadmill – although there is some evidence it still can increase bone density <a href="https://pubmed.ncbi.nlm.nih.gov/7551766/">to a smaller degree</a>. Nevertheless, like cycling, this drawback of rowing may be negated by offering a more joint-friendly option, providing a great alternative for those with joint pain who still want to keep their heart and lungs healthy. <h2>So, what’s the best option?</h2> It depends on your goals, what your current health status is, and, most importantly, what you enjoy the most. The best exercise is the one that gets done. So, choose whichever piece of equipment you find the most enjoyable, as this will increase the likelihood you’ll stick to it in the long term.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/213352/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/lewis-ingram-1427671">Lewis Ingram</a>, Lecturer in Physiotherapy, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a>; <a href="https://theconversation.com/profiles/hunter-bennett-1053061">Hunter Bennett</a>, Lecturer in Exercise Science, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a>, and <a href="https://theconversation.com/profiles/saravana-kumar-181105">Saravana Kumar</a>, Professor in Allied Health and Health Services Research, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/treadmill-exercise-bike-rowing-machine-whats-the-best-option-for-cardio-at-home-213352">original article</a>.

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Treadmill, exercise bike, rowing machine: what’s the best option for cardio at home?

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