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We can’t all be astronauts, but the Artemis II crew has fitness lessons for everyone

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We can’t all be astronauts, but the Artemis II crew has fitness lessons for everyone

The Artemis II crew — Christina Koch (left), Jeremy Hansen, Victor Glover and Reid Wiseman — have to share tight quarters aboard the Orion spacecraft on their way home. But even with limited space, they can still get a solid workout in — thanks to a very special piece of equipment.

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Even a few days away from Earth can significantly alter the human body. Without the constant pull of gravity on the skeleton, muscle and bone can quickly atrophy. To combat this immediate physical decline, the four astronauts aboard Orion on the Artemis II mission are using a specially designed machine known as the flywheel.

In a video blog posted before the crew launched, Canadian astronaut Jeremy Hansen compares the flywheel to a rowing machine. “Like a cardiovascular workout where you row at a lower resistance and a fast pace,” Hansen explains as he demonstrates the flywheel’s functionality. Astronauts strap their feet onto a small platform and pull on a handle connected to a cable. Pulling spins a flywheel. It works like a yo-yo, according to NASA — astronauts get as much resistance as they put into it.

The Artemis II crew exercises on Orion using a flywheel, a simple cable-based device for aerobic and resistance workouts.

The Artemis II crew exercises on Orion using a flywheel, a simple cable-based device for aerobic and resistance workouts.
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The flywheel is small, not unlike an extra large shoebox. Working in Orion’s tight quarters — only 316 cubic feet , about the size of a smallish bedroom — engineers had to design this device to perform with utmost efficiency, so that it can both provide a cardiovascular workout and resistance exercises up to 400 pounds. Astronauts can use it to do weightlifting moves like squats, deadlifts and curls.

Before the astronauts, there were the pillownauts 

The flywheel has been years in the making. Jessica Scott, an exercise physiologist at Memorial Sloan Kettering Cancer Center, worked on early prototypes for NASA, anticipating that astronauts would be vulnerable to rapid muscle atrophy without physical exertion.

Scott compares ten days in space to ten days in bed. Atrophying for that amount of time, says Scott, “You would feel very weak and your muscles start to lose size very quickly.” The heart, she stresses, is especially vulnerable with this decline in strength.

When recruiting people to study these early flywheel prototypes, says Scott, researchers looked for 30 subjects willing to lie in bed for 70 days. She and her colleagues weren’t sure they would be easy to recruit.

Turns out, people were eager to spend hours a day reclining in the name of science.

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“We had over 10,000 people apply for 30 positions,” says Scott.

They called themselves the “pillownauts.”

Researchers divided these participants into different groups. Some stayed in bed all day. Some of them broke their bed rest in order to work out on a more traditional suite of exercise equipment, and some of them used the flywheel. The goal was not to improve fitness, but to prevent declines.

The flywheel, says Scott, delivered the results researchers were hoping.

“What was really exciting was that the small device could prevent the declines, the same amount that a full gym could do,” she says.

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Other missions — like those aboard the International Space Station — have full suites of exercise equipment. The flywheel has not yet been tested for longer durations, but Scott says she’s hopeful it could also provide fitness for astronauts in longer periods of gravity deprivation.

Not everyone’s an astronaut, but everyone ages

Even for people who are not planning on orbiting the moon — this research has important implications, says Thomas Lang, a radiologist who studies bone and muscle loss and has worked with NASA on exercise science for previous missions.

“You start childhood and then as you grow your bone density and mass reach a peak,” says Lang, “in your late twenties or early thirties.”

Those who are lucky to live to old age, he says, will experience hormonal changes that lead to bone loss over time. For women, that escalates sharply in menopause. “That’s a big whopping decline,” says Lang.

Men’s decline may not be as dramatic, says Lang, but they are also vulnerable, especially as they live into their 70s and 80s.

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NASA researcher Jessica Scott is also hopeful this work could have broader applications for the general public. Few of us will travel to space, but many of us can relate to dealing with time and space constraints when it comes to exercise, says Scott.

“One day we could all be having our own flywheel,” she says — something small enough to fit under a desk at work, or in the corner of an office.

After his first 30-minute aerobic session with the device, astronaut Reid Wiseman said he was happy to report that in addition to providing a good workout, he was pleased the flywheel didn’t drive his roommates too crazy. No one had to wear ear plugs to block out the sound.

“ It is a really good piece of gear and we can actually get a nice workout,” says Wiseman. “I look forward to the next time I get to try a resistance workout.”

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Group Exercise Boosts Cognition, Fitness in Dementia

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Group Exercise Boosts Cognition, Fitness in Dementia

In a groundbreaking advancement poised to revolutionize dementia care, researchers have announced a comprehensive study protocol examining the influence of community-based structured group exercise programs on both cognitive and physical functions in older adults living with dementia. This randomized controlled trial, detailed in a recent publication slated for BMC Geriatrics in 2026, aims to explore the untapped potential of structured physical activity as a non-pharmacological intervention to slow cognitive decline and improve overall quality of life.

Dementia, a progressive neurodegenerative condition characterized by deteriorating memory, thinking, and motor skills, remains one of the most pressing global health challenges, especially as populations age worldwide. Traditional approaches have primarily focused on symptom management and pharmacological treatments, which often come with limited efficacy and undesirable side effects. Against this backdrop, physical exercise has emerged as a promising avenue, backed by neurobiological theories suggesting that physical activity may promote neuronal plasticity, enhanced cerebral blood flow, and reduced neuroinflammation.

The study underlines the importance of a community-based framework, which holds immense promise for scalability, accessibility, and sustained engagement. Community-based interventions leverage social support, environmental context, and local resources, creating an ecosystem that encourages consistency and motivation among older adults. It also introduces structured group exercise as opposed to individual exercise routines—infusing a social and interactive element believed to synergistically bolster cognitive engagement alongside physical exertion.

At its core, this research protocol delineates a comprehensive systematic design featuring randomization — the gold standard for clinical trials — ensuring that participants are evenly distributed among intervention and control groups to minimize bias. The intervention includes carefully tailored exercise regimens that combine aerobic, resistance, balance, and flexibility training. These multifaceted routines aim to target various physiological systems implicated in dementia progression, from cardiovascular health to motor coordination and muscle strength.

Emerging studies have shown that aerobic activities stimulate hippocampal neurogenesis, critical for memory and learning processes often impaired in dementia. Resistance training, meanwhile, supports muscular strength essential for daily activities, reducing fall risk and enhancing autonomy. Balance and flexibility exercises further contribute by improving proprioception and joint mobility, thereby mitigating mobility-related comorbidities. By integrating these elements into structured group calendars, researchers anticipate synergistic effects accumulating over the trial timeline.

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Cognitively, the engagement associated with group exercise acts as a dual catalyst. Beyond the direct neuroprotective benefits of physical activity, the social interaction inherent in group settings stimulates cognitive domains such as attention, executive functions, and emotional regulation. Social isolation and loneliness have been consistently linked to accelerated cognitive decline; thus, group dynamics within this exercise framework may serve as a potent protective factor by nurturing community bonds and meaningful interpersonal connections.

The outcome measures designed for this trial span a range of validated neuropsychological and physical assessments. Cognitive outcomes include evaluations of global cognition, memory, executive function, and processing speed conducted via standardized instruments like the Mini-Mental State Examination (MMSE) and the Montreal Cognitive Assessment (MoCA). Physical parameters are meticulously assessed using tests such as gait speed, handgrip strength, and the Timed Up and Go (TUG) test, presenting a multidimensional view of functional status.

Importantly, the protocol emphasizes longitudinal follow-up to determine the persistence of any cognitive and physical benefits post-intervention, which is pivotal in discerning sustainable impacts rather than transient improvements. Additionally, the researchers have accounted for confounding variables including baseline physical activity levels, comorbidities, and medication use, thereby ensuring the robustness and generalizability of the findings.

The implications of positive outcomes from such a trial are vast. Demonstrated efficacy could reshape public health policies and clinical guidelines, reinforcing physical activity as an essential component of dementia management. Community centers, healthcare providers, and caregiving organizations might adapt to include tailored structured group exercise programs, thus democratizing access to an affordable, scalable intervention with minimal side effects.

Moreover, this research aligns with growing interdisciplinary perspectives that advocate for holistic management approaches — ones that incorporate biological, psychological, and social determinants of health. The integration of physical activity into care plans reinforces a paradigm shift from reactive to proactive and preventative models that empower older adults with dementia to maintain independence and dignity.

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While challenges remain in delivering consistent, well-supervised exercise programs adapted to heterogeneous patient needs and functional capacities, this trial’s community-rooted design mitigates many logistical and motivational barriers. Leveraging local infrastructure and peer support creates a dynamic environment conducive to sustained participation—a crucial factor given historically high dropout rates in exercise interventions.

From a neurobiological standpoint, this initiative supports the evolving understanding of dementia as a modifiable disorder where lifestyle and environmental factors play significant roles. The interplay between exercise-induced neurotrophic factors such as brain-derived neurotrophic factor (BDNF), reduced oxidative stress, and enhanced cerebral angiogenesis may offer mechanistic insights into how structured physical activity slows neurodegenerative processes.

In conclusion, the launch of this randomized controlled trial heralds a promising avenue for dementia intervention research by meticulously investigating the dual benefits of physical exercise on cognitive and physical realms in a structured, community-based setting. Its innovative combination of rigorous scientific methodology and practical community implementation presents an exciting frontier in mitigating the global dementia burden.

For families, caregivers, healthcare professionals, and policymakers alike, this trial offers hope through a vision of dementia care that transcends pharmacological limitations and centers on empowering individuals via movement, social connection, and holistic well-being. The ultimate testament to this research will be its translation from protocol to practice—transforming insights into real-world impact.

Subject of Research: Effects of a community-based structured group exercise program on cognitive and physical function among older adults with dementia.

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Article Title: Effects of a community-based structured group exercise program on cognitive and physical function among older adults with dementia: a randomized controlled trial study protocol.

Article References:
Amin, A., Hossain, K.M.A., Uddin, M.R. et al. Effects of a community-based structured group exercise program on cognitive and physical function among older adults with dementia: a randomized controlled trial study protocol. BMC Geriatr (2026). https://doi.org/10.1186/s12877-026-07631-3

Image Credits: AI Generated

Tags: cerebral blood flow and cognitioncognitive improvement in dementiacommunity-based exercise programsdementia care innovationgroup exercise for dementianeuroinflammation reduction through exerciseneuroplasticity and exercisenon-pharmacological dementia interventionsphysical fitness in older adultsrandomized controlled trial dementiascalable dementia interventionssocial support in dementia care

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Strategic Exercise Techniques to Maximize Mood Elevation – The Boca Raton Tribune

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Strategic Exercise Techniques to Maximize Mood Elevation – The Boca Raton Tribune
A Shift in Scientific Understanding Reveals That the ‘Runner’s High’ Stems from a Complex Cocktail of Chemicals, Including Endocannabinoids, Which Can Be Triggered by Adjusting Duration and Social Context. The widely reported phenomenon of exercise-induced euphoria—often known as the “runner’s high”—is rooted in specific alterations to neurochemistry that generate feelings of hope, calmness, and social […]
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Do you have sore hips? I asked a pain specialist why this happens and how to improve it

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Do you have sore hips? I asked a pain specialist why this happens and how to improve it

Hip soreness is a terribly common issue—it’s something that I certainly suffer with—so I’m always trying to get to the bottom of where this soreness originates from and what you can do about it.

According to Dr Shady Hassan, MD, an interventional pain and sports medicine physician and the founder of NefraHealth, immobility is the root cause of this discomfort.

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