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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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At 31, I’m the Strongest I’ve Ever Been—This Female-Focused Training Plan Is to Thank

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At 31, I’m the Strongest I’ve Ever Been—This Female-Focused Training Plan Is to Thank

I was in my early 20s when I first experienced the power of strength training firsthand. I was working at Women’s Health magazine and was tasked with learning to deadlift for twelve weeks at a CrossFit-style gym with a personal trainer.

I’d always been into movement, but found the concept of weights pretty terrifying before that. Most of the gyms were male-dominated spaces, and the gym plans were male-specific, too; plus, I’d grown up in a generation terrified of weight training making you “bulky” and determined to typecast muscle mass as “non-feminine.”

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Unlikely habit helped new parents shed 50 kilos

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Unlikely habit helped new parents shed 50 kilos

Books are getting Australians into the gym and keeping them there longer, and the benefits of this emerging health trend aren’t just physical – they’re mental too.

Listening to audiobooks and podcasts helped Yvonne Kong, 41, and her husband get back into fitness after becoming parents and lose a combined 50 kilos.

Yvonne Kong, 41, used podcasts to get back into exercise and stay motivated. Yvonne Kong

It also helped them broaden their minds and carve out a bit of “me time” in our busy modern world.

Audiobooks and podcasts have given Aussies the chance to turn exercise into a vehicle for learning, training their minds and bodies simultaneously. Some are even taking their e-readers and paperbacks to the gym (more on that later).

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“Listening to a story while working out actually helped me stay motivated and more consistent,” Kong told nine.com.au.

Like many Aussies, she used to dread hitting the treadmill and constantly found herself counting down the minutes until her session was over.

That changed when she hit play on a true-crime podcast during a workout.

Kong got so caught up in the story she forgot about the timer on her treadmill until her workout was over.

“I did an hour treadmill course and actually finished it without noticing,” she said.

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Have you got a story? Contact reporter Maddison Skipper at mleach@nine.com.au

Since then, she’s found herself looking forward to exercising because it gives her an hour of dedicated listening time.

Her husband does the same while running; he took up listening to audiobooks because it motivated him to run longer and more often so he could get through the story.

The benefits of reading/listening while exercising

About one in three Aussies now listen to audiobooks when they exercise, according to data from Audible.

More than a third of them exercise for longer because of it, one quarter work out more often, and half experience better mood during exercise.

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Data released exclusively to nine.com.au revealed both men and women reported these positive experiences at an almost identical rate, despite often having different workout routines and attitudes towards exercise.

Audiobooks are particularly popular with runners, more than a third of whom say they feel more focused on their run while listening.

Personal trainer Ben Lucas is one of them; he started listening while running to make time pass quickly and train his mind as well as his body.

“You’re out there anyway, so you may as well be learning something valuable while you do it,” he told nine.com.au.

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What the experts think

Mindfulness expert Luke McLeod told nine.com.au there has even been some research into how exercise increases blood flow to the brain, which helps information retention.

Lucas devours business and personal development audiobooks like Atomic Habits by James Clear while working out, a trend which has become known as ‘personal development/PD stacking’.

The goal is to “double-up of some type of personal development like listening to an e-book, which works out the mind, while also working out the body,” McLeod said.

Luke McLeod, author and founder of Soul Alive and Workplace Wellbeing Australia.

‘PD stacking’ is the new health optimisation trend, according to Luke McLeod. Luke McLeod

It’s all about optimising time in our busy world, which is particularly appealing to Aussies who are time-poor; like new parents trying to juggle work and a baby.

“When I’m with [my daughter], I’m trying to be present for her, so I’m not going to be listening to podcasts or anything,” Kong said.

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“When I exercise, that’s my time.”

Ben Lucas, personal trainer and head coach of TCS Sydney Marathon.

Personal trainer Ben Lucas has been using audiobooks to stay on track with his running. Ben Lucas

McLeod agreed that reading or listening while working out can be a great form of self-care for some Aussies.

The only pitfall is that not every workout is suited to it.

It’s hard to keep up with an audiobook or podcast if you’re trying to count reps while strength training, and there’s no way to read an e-book on a rowing machine.

“I find podcasts and audiobooks work best during longer, slower cardio sessions,” Lucas said.

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“Whether it’s an easy run, walk, or long ride, you can relax into the session, tune out a little, and focus on what you’re listening to while still getting the work done.”

He also warned Aussies to stay aware of their surroundings and hazards like traffic, cyclists, other pedestrians, or uneven paths if they listen while exercising outdoors.

McLeod added that stacking habits like exercise and reading isn’t worth it if one interrupts the other.

Road testing reading at the gym

I’ve been in and out of the gym a lot over the last decade, jumping from strength training, to reformer Pilates, and other programs in between.

But my favourite way to exercise is to hop on a treadmill with my Kindle.

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I rest it on the console, set a slight incline and a moderate speed and lose myself for an hour. No workout has ever felt faster or easier.

Reporter Maddison Skipper reads a Kindle while walking on the treadmill at her local gym.

My Kindle fits perfectly into the little divot on the treadmill console meant for a phone or tablet. Maddison Skipper

The pros: Focusing on what I’m reading takes my mind off the clock and get through an hour of cardio without getting bored or losing motivation.

Reading at the gym also helps me stay consistent because it’s one of the few places I can just switch off and focus on my book without interruptions, so I want to keep coming back.

That hour of dedicated reading time has also been great for my mental health because it forces me to slow down and focus on something completely removed from any stress in my own life.

The cons: It did take a few sessions to get used to reading while moving, but raising the brightness on my Kindle and setting it to a larger font really helped.

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Those who prefer to listen don’t have to worry about any of that though; just download an audiobook and you’re good to go.

I also invested in a pair of noise-cancelling headphones to muffle the dance music that plays over my gym’s loudspeakers, which made it much easier to focus.

Reporter Maddison Skipper reads a Kindle while walking on the treadmill at her local gym.

Reading at the gym allows Aussies like me to work on my physical and mental fitness simultaneously. Maddison Skipper

Now the only downside to reading at the gym that I sometimes hit a slump after I finish a really good book because I don’t want to hit the gym again until I find something new to read.

The verdict: It’s not for everyone, but I have found that reading at the gym has been the best way for me to stay motivated and consistent.

I feel good about taking the time to work on both my body and my mind a few times a week, and I’ve been able to check some amazing books off my ‘to be read’ list while working out.

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Audiobooks make it even easier for Aussies who want to exercise without the hassle of a physical book or e-reader, or who have different accessibility needs.

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8News tries Pilates exercises for Fitness Friday

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8News tries Pilates exercises for Fitness Friday

RICHMOND, Va. (WRIC) — 8News got a visit from two special guests Friday to learn about the benefits of Pilates and try out some beginner moves.

8News anchors Autumn Childress and Delaney Hall were joined by Laura Mae Harper and Angie Madison with Point and Flex Pilates. The studio, which opened on Sept. 3 last year, offers a variety of classes, ranging from beginner to intermediate and advanced.

“We went through years of teaching at other places and developed this beautiful studio for them and this community, and we’re super excited about it,” Harper said.

For more information, visit Point and Flex Pilates.

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