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What Scientists Learned About Fitness From Studying 11,000 Twins

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What Scientists Learned About Fitness From Studying 11,000 Twins
A comprehensive national study has demonstrated a clear link between neighborhood walkability and increased walking activity among residents. Analyzing data from approximately 11,000 twins, the research found that a 55% increase in walkability leads to a 23% increase in weekly walking minutes, hi
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Moderate, vigorous exercise boosts cognitive abilities for 24 hours

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Moderate, vigorous exercise boosts cognitive abilities for 24 hours
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Brain boost from exercise and deep sleep lasts through the next day, recent research shows. Image credit: BONNINSTUDIO/Stocksy.
  • Regular exercise is good for brain health.
  • Past studies show the ‘boost’ the brain receives from physical activity normally peaks within the first 10 to 20 minutes.
  • Researchers from University College London have now found that the exercise-caused improvement to cognitive performance may actually last for 24 hours.
  • Scientists also linked sitting less and getting 6 or more hours of sleep to better memory test scores the next day.

Previous research shows that the “boost” the brain receives from exercise typically peaks within the first 10 to 20 minutes.

Now, researchers from University College London, in the United Kingdom, have found that the exercise-related improvement to cognitive performance may actually last for 24 hours.

Scientists also linked sitting less and getting 6 or more hours of sleep — especially additional REM sleep and deep sleep — to better memory test scores the next day.

For this study, researchers recruited 76 adults between the ages of 50 and 83 that had no diagnosis of dementia or cognitive impairment.

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Each participant wore a wrist accelerometer for 8 days to track their physical and sedentary behavior, as well as their sleep patterns.

“Because our cognitive function declines as we age, and having good cognitive function is important for quality of life and independence, we want to continue to understand optimal ways to modify our lifestyle to maintain good cognitive function for as long as possible,” Mikaela Bloomberg, PhD, senior research fellow in the Department of Epidemiology and Public Health at University College London, and lead author of this study told Medical News Today.

“We know from laboratory-based studies that we get a cognitive boost in the minutes to hours following a bout of exercise,” Bloomberg continued. “We wanted to see whether this benefit might last longer than a couple hours, particularly in a group of older adults where maintenance of cognitive function is particularly important, and outside a laboratory setting.”

Upon analysis, Bloomberg and her team found that more moderate or vigorous exercise — compared to a person’s average — was correlated to an improved working memory (the ability to retain information while doing something else) and episodic memory (recalling everyday events) the next day.

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Conversely, researchers discovered that being more sedentary led to decreased working memory the next day.

“Exercise stimulates blood flow and neurotransmitters that contribute to cognitive function,” Bloomberg explained. “[These findings mean] that the memory benefits of physical activity might last longer than previously established from laboratory-based studies.”

The researchers also found that study participants receiving 6 or more hours of sleep had better episodic memory and psychomotor speed compared to those who slept less.

They further found that every 30 additional minutes of REM sleep the previous night was associated with an increase in participants’ attention scores.

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Moreover, each 30-minute increase in slow-wave sleep — also called deep sleep — was correlated to improved episodic memory score.

“Sleep and physical activity are intrinsically linked behaviors; we can’t consider physical activity without taking sleep into account which is why we also considered sleep,” Bloomberg said. “This finding reiterates what is already known about sleep and next-day memory function.”

“It will be interesting as a next step to undertake similar research in a group of adults that is less cognitively healthy than the group we studied, to see whether we see different results,” she added.

“Among older adults, maintaining cognitive function is important for good quality of life, well-being, and independence,” Andrew Steptoe, PhD, professor of psychology and epidemiology and head of the Research Department of Behavioral Science and Health at University College London and co-author of this study said in a press release. “It’s therefore helpful to identify factors that can affect cognitive health on a day-to-day basis.”

“This study provides evidence that the immediate cognitive benefits of exercise may last longer than we thought,” Steptoe continued.

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“It also suggests good sleep quality separately contributes to cognitive performance. However, we can’t establish from this study whether these short-term boosts to cognitive performance contribute to longer term cognitive health and though there is plenty of evidence to suggest physical activity might slow cognitive decline and reduce dementia risk, it’s still a matter of some debate,” he cautioned.

MNT also spoke with Ryan Glatt, CPT, NBC-HWC, senior brain health coach and director of the FitBrain Program at Pacific Neuroscience Institute at Providence Saint John’s Health Center in Santa Monica, CA, about this study.

“While intriguing, the study is small and limited in its generalizability,” Glatt, who was not involved in the research, told us. “The connection between physical activity, sleep, and next-day cognitive benefits warrants further exploration with a larger and more diverse sample.”

“Exercise and sleep are both modifiable lifestyle factors, which means their optimization could have significant implications for cognitive aging and public health interventions. However, more robust evidence is needed to establish these effects over longer periods. Future research should include larger sample sizes, diverse populations — including those with cognitive impairments — and longer follow-up periods to determine if short-term cognitive benefits translate into sustained improvements or reduced cognitive decline.”

– Ryan Glatt, CPT, NBC-HWC

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Finally, MNT spoke withVernon Williams, MD, a sports neurologist, and the founding director of the Center for Sports Neurology and Pain Medicine at Cedars-Sinai Kerlan-Jobe Institute in Los Angeles, about this study.

Williams, who was not involved in the research, commented that the findings add to the data that seem to support mounting evidence of the benefits of activity and exercise to the brain.

“The fact that the study suggests longer duration — not just hours, but evidence of improvement into the following day — is […] noteworthy,” he told us.

“It seems very clear that the more we look and the more it’s formally studied, the more we find evidence that optimizing sleep and physical activity /exercise are beneficial — not just for physical health, but for cognitive health and function as well. Anything we can do to improve the brain’s functions — including how we think, act, and behave — key aspects of who we are and how we interact with our loved ones and the world in general — is important.”

– Vernon Williams, MD

Like Glatt, however, Williams also said he would “like to see this kind of study replicated and findings confirmed in larger numbers or participants.”

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He added: “I’d like to see how we can educate and inform the public (and physicians) in ways that change behavior — and result in the benefits suggested by the study. There are a host of questions and opportunities for research that can benefit individuals and society as a whole around the concept of the effects of sleep and exercise on cognition. It’s exciting!”

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Staying Fit Can Keep Seniors' Brains Sharp

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By Dennis Thompson HealthDay Reporter THURSDAY, Dec. 12, 2024 (HealthDay News) — Seniors who want to stay sharp as they age should hit the treadmill, elliptical or exercise bike as often as possible. A new study shows that better cardio fitness in older age is linked to healthier brain aging. That …

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Why You Should Give Exergaming a Try

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Why You Should Give Exergaming a Try

Playing video games. Doing squats. Have you ever tried combining these activities into one physical fitness routine … at the same time?

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The latest technology in fitness tracking and video games allows for all kinds of exciting possibilities. Games like Nintendo’s Ring Fit Adventure and even mobile walking challenges, for example, are part of a growing trend of exergaming.

But how do fitness games vary? And will they benefit you if you’re a first-timer starting an exercise routine?

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Sports medicine physician, and director of the Cleveland Clinic Esports Medicine program, Dominic King, DO, shares how anyone can make the most out of exergaming and the kinds of benefits you can get from active video games.

What is exergaming?

Exergaming, or active video gaming, tasks players with participating in technology-driven physical activities and exercises. In many cases, exergaming incorporates some form of digital component alongside other technologies. Motion sensors and wearable devices track a player’s movements and in-game progress. As the player accomplishes certain levels or tasks, the player is usually rewarded with some marker of success in the form of in-game trophies and achievements.

Examples of exergaming include games like Just Dance, which has players following on-screen visual cues in order to score points based on their rhythm and accuracy.

Other games rely on virtual reality to create an immersive multisensory environment. In Beat Saber, players have to keep up with the beat of a song by swinging their arms in repetitive, physical movements to slash through multicolored blocks. In the game, the player holds a virtual saber in each of their hands that matches which blocks you’re supposed to smash through. So, it not only becomes a game of rhythm and accuracy, but it also involves a great deal of hand-eye coordination, timing, flexibility and skill.

“Exergaming is a blend of pixels and perspiration,” says Dr. King. “It provides a digital way to stay active and have fun.”

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Benefits of playing active video games

Exergaming grew in popularity at the height of the COVID-19 pandemic. It emphasized the importance and simplicity of home-based exercise as a way to stay active and combat sedentary behavior.

“When gyms closed, people didn’t just stop moving — they innovated,” notes Dr. King, “Exergaming became the hero of home fitness, bridging the gap between staying active and having fun. And it’s still going strong.”

But the gamification of exercise has been around for quite some time. Smartwatches and fitness trackers chart your progress, letting you compete with other people in daily and weekly challenges. Even AMRAP workouts can inspire healthy competition among gym members. But exergaming builds off those concepts by doubling down on technology and a digital approach to physical activity.

“Fitness has finally joined the age of inclusivity. Exergaming embodies the idea that staying healthy should be accessible, achievable and — most importantly — enjoyable for everyone,” he adds.

We know exercise on its own has numerous benefits. Video games have unique benefits, too, that can positively impact your mind and body. And when you marry the two together, these benefits can play off each other to create a unique experience that helps in short- and long-term ways.

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The benefits of exergaming include:

Sense of accomplishment

In-game trophies and achievements give you something to focus on other than the work of exercise. “Exergaming takes you into worlds where dragons are slain, quests are completed and calories are burned — all without feeling like a workout. That’s the magic of an immersive experience,” enthuses Dr. King.

Inclusivity and accessibility

Anyone can play an active video game thanks to various accessibility settings and a level of scalability that’s built into the gameplay to match a player’s experience. “Exergaming makes fitness more approachable for people with various fitness levels and ages,” reinforces Dr. King. “It’s a pretty gentle entry point if you’re intimidated by some conventional exercise routines.”

Motivation and enjoyment

For certain populations, exergaming may be more beneficial than other forms of exercise because of its unique approach to physical activity. Take childhood obesity, for example. A 2021 study suggests active video games could be used as part of someone’s treatment plan because its shown positive effects on body mass index (BMI) and cardiorespiratory fitness. And if active video games give someone access to a physical fitness routine that benefits them, it can have a direct positive impact on their physical health.

Reduction of stress

Stress can tend to get in the way of physical fitness and mental motivation. But Dr. King points out that when you’re doing an activity you enjoy, like exergaming, it has the ability to reduce your level of stress as long as you’re enjoying the activity itself. “Gaming has always been about escape, but it’s also about healing. The interactive nature of exergaming can reduce stress, elevate mood and even enhance cognitive function,” he adds.

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Improving the physical therapy experience

Exergaming is often used in physical therapy to improve the experience and approach to recovery. For example, in the effort to strengthen and rehabilitate someone’s ankle after a high-ankle sprain, a physical therapist may have them balance on one foot while catching a ball as it bounces off of a trampoline. And someone else who’s trying to strengthen their hips may use virtual reality to rocket a sled forward as they do low and slow squats.

“Gamification isn’t just a buzzword — it’s a game-changer. From inspiring movement to enhancing rehab in orthopaedics, it’s weaving its way into how we approach health at every level,” says Dr. King.

Mental and psychological benefits

“We’ve all watched Netflix on a treadmill, but exergaming takes it to a new level,” according to Dr. King. “By engaging your mind and body, exergaming transforms exercise from something you endure to something you enjoy.”

Active video games engage your mind in a different way and force you to operate on a few different levels with multiple goals in mind.

“When you’re having fun, you forget to quit,” he continues. “Exergaming taps into that joy, keeping you moving longer and stronger without the mental drag of a traditional workout.”

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Social support

Some of us tend to perform better when we’re exercising in larger groups. “Exergaming doesn’t just build strength — it builds community,” relays Dr. King. “Whether you’re climbing a leaderboard or cheering on a friend, the social element adds an extra layer of connection.”

How to make the most out of exergaming

If exergaming piques your curiosity, here are some strategies to get you started.

Track your data

Not sure if you’re ready or able to purchase the latest exergaming technology? No problem. At the simplest level, you can grab a pen and paper and keep track of your routine or how your exercises make you feel. Over time, you can use that data to help pivot your focus or improve the amount of reps, weights or other activities you do. Smartwatches and fitness trackers can be the next step when you’re looking to level up your tech.

“The real power of exergaming is in the data — it’s like having a digital coach that tracks your progress and keeps you accountable,” explains Dr. King. “Strength, flexibility and fitness all thrive with that kind of feedback loop.”

Approach exergaming like any other workout

Active video games are fun, but they’re not meant to be solely for entertainment. To make the most out of any exergaming experience, you want to schedule it and plan it out. Put it on the calendar. Make time for warm-up and cool-down. And create a routine.

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“Start small but stay consistent,” advises Dr. King. “Pick one day, warm up and dive into a game. Whether it’s a quest or a quick stretch, your future self will thank you.”

Make sure you have proper form

“Yes, it’s a game — but your body is still playing for keeps,” stresses Dr. King. “Controlled movements, good form and realistic goals will protect your joints and make sure you’re winning both on and off the screen.”

If you’re new to exercising, overexertion can cause muscle strains and tendon inflammation. So, take your time increasing the intensity of your exercises and try not to push through any pain. Some discomfort or achiness is to be expected. But if you’re experiencing prolonged pain during or after exercise, you may want to work with a physical therapist or exercise physiologist who can help correct your form or determine the cause of your pain.

Create some goals

“Exergaming’s ‘pick up and play’ vibe is its secret weapon, but it’s just one part of a balanced fitness diet,” clarifies Dr. King. “Combine it with scheduled exercise to unlock its full potential.”

If you’re not sure where to start, you can begin by creating SMART goals that are specific, measurable, attainable, relevant and time-bound. For example, maybe you spend 30 minutes with an active video game one day a week and then, scale that up to two days a week once you’re comfortable. Over time, you can build in other exercises, too.

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“People often focus on hitting a specific weight or reaching a fitness milestone, but the real game-changer is consistency,” he notes. “Think of it as leveling up every day — stay consistent, and all your other goals will naturally fall into place.”

Why we should look to exercise as a fun activity

Exercise can be daunting because it can seem like a lot of work. But exercise, and the negative perception of it, doesn’t have to be that way.

“Exercise often gets a bad rap as just another chore on the to-do list,” recognizes Dr. King. “But when it becomes an engaging, immersive activity — like exergaming — it stops feeling like work and starts fitting seamlessly into your daily and weekly routine.”

How you exercise is entirely up to you. For some, it’s squats. For others, it’s swimming. And if active video games are enough to give you joyful movement, perhaps it’s your path forward into physical fitness. As long as you’re exercising in some way, you’ll reap the benefits.

“Exercise should never feel like punishment,” emphasizes Dr. King. “It’s an investment in a longer, healthier, happier life. Whether you’re navigating virtual adventures or crushing a dance routine, exergaming proves that workouts can be as fun as they are effective.”

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