In a laboratory at Tohoku University, young and healthy volunteers sat motionless for half an hour while a virtual body ran before their eyes, and something in their stress responses eased as if they had exercised. The people who study the body have long known that movement calms the mind, but for those whose bodies cannot move, that gift has been out of reach. This small experiment, published in May 2022, asks whether the illusion of motion, lived from within a borrowed body, can carry some of exercise's quiet medicine. Its answer, for now, is tentatively yes, and the open question is whether
Virtual Reality Exercise Eases Stress and Anxiety in Young Adults, Study Finds
They sat still while an avatar ran for thirty minutes.
Mark
So the headline idea is that you can get a stress benefit from exercise without moving?
Mimi
That's what this study suggests. Volunteers sat still and watched an avatar run at 6.4 km/h for 30 minutes from a first-person view, and afterward their stress response and anxiety were lower.
Mark
How did they measure stress?
Mimi
Two ways. Salivary alpha-amylase, a biomarker of neuroendocrine stress, and a questionnaire on anxiety, taken before and after.
Luke
Worth separating those. The biomarker is objective, but the questionnaire is self-reported. And the source says the effect is comparable to real exercise, without giving numbers.
Mark
Why does that matter for who's studied?
Mimi
The participants were young and healthy. The people who might benefit, such as neurological, cardiovascular or hospitalized patients, weren't in this experiment.
Luke
Right, so the clinical promise is a hope, not a finding. Earlier work did show benefits in healthy older adults, but still healthy ones.
Mark
And the context Burin gives?
Mimi
She points to Japan, with high performance demands and an ageing population, and calls it a new frontier.
Luke
That's her framing. The article doesn't say how many participants there were or whether a control group watched something else, so I'd hold the conclusions loosely.
Le Pouls
- Thirty minutes of stillness produced the body's signs of having run, a quiet contradiction that unsettles what we assume exercise requires.
- Stress markers in saliva and self-reported anxiety both fell after the virtual run, pointing toward a measurable calm rather than a vague impression.
- Researchers are reaching toward patients with neurological conditions, heart disease, and hospital beds, people for whom real exercise is risky or impossible.
- The method has so far been tested only on healthy young people, so its promise waits on clinical trials before it can reach the patients it was built for.
In a laboratory at Tohoku University, young and healthy volunteers sat motionless for half an hour while a virtual body ran before their eyes, and something in their stress responses eased as if they had exercised. The people who study the body have long known that movement calms the mind, but for those whose bodies cannot move, that gift has been out of reach. This small experiment, published in May 2022, asks whether the illusion of motion, lived from within a borrowed body, can carry some of exercise's quiet medicine. Its answer, for now, is tentatively yes, and the open question is whether the people who most need that relief will ever be the ones who receive it.
For thirty minutes, the young, healthy volunteers in a Tohoku University experiment did not move. They sat still while an avatar, seen from a first-person view that made it feel like their own body, ran at 6.4 kilometers per hour. Afterward, their bodies and their own reports suggested they were less stressed and less anxious.
The study, led by Professor Dalila Burin at the university's Smart-Aging Research Center and published in May 2022, asks whether immersive virtual reality can reproduce one of exercise's known gifts: a calmer response to stress. The premise is simple and sobering. Some people cannot exercise, or cannot do so safely, including neurological patients, people with cardiovascular disease, and those in hospital.
The team had already seen that watching a moving virtual body could shift physiology, with heart rates following the on-screen motion, and that older adults who completed short virtual sessions twice a week for six weeks gained cognitive benefits. This time they tested stress itself, inducing a social stress response and measuring it through salivary alpha-amylase and a questionnaire on anxiety. Both showed reductions after the virtual run, an effect the researchers describe as comparable to real exercise.
Burin frames the stakes in everyday terms: being judged, rejected, or evaluated. Some stress can be useful, she notes, but repeated and intense exposure wears on health. Still, the participants were healthy and young, not the patients the approach is meant to serve. The next step, testing among those who most need relief, is where the story now turns.
For thirty minutes, the young, healthy volunteers in a Tohoku University experiment did not move. They sat still while an avatar, seen from a first-person view that gave them the illusion of owning its body, ran at 6.4 kilometers per hour. Afterward, their bodies and their own reports suggested they were less stressed and less anxious.
The work comes from researchers at Tohoku University's Smart-Aging Research Center (IDAC), who published it in the International Journal of Environmental Research and Public Health on May 23, 2022. The study was developed by Professor Dalila Burin. It asks whether immersive virtual reality, or IVR, can reproduce one of the known benefits of real exercise: a calmer response to stress.
The premise is that some people cannot exercise, or cannot do so safely. The researchers name neurological patients, people with cardiovascular disease, and hospitalized patients. IVR was originally designed for entertainment, but academics have taken an interest in its clinical potential because it lets a user experience a virtual world through a virtual body.
The new study builds on earlier work from the same group. In a previous experiment, they found that watching a moving virtual body from a first-person perspective produced physiological changes even in young participants who stayed motionless. Their heart rates rose and fell in step with the virtual movements. Acute cognitive and neural benefits followed, much as they do after real physical activity. A follow-up study found the same benefits in healthy older adults, who completed 20-minute sessions twice a week for six weeks.
This time the team looked at stress. Before and after the virtual training, they induced a psychosocial stress response in participants and measured it using salivary alpha-amylase, a biomarker of neuroendocrine stress. They also gave participants a subjective questionnaire on anxiety.
The results showed a lower psychosocial stress response and lower anxiety after the virtual run. The researchers describe the effect as comparable to what happens after real exercise.
Burin explained what the study means by psychosocial stress: the kind people experience in everyday social situations, such as being judged, being rejected, or having their performance evaluated. A moderate amount of exposure to stress might be beneficial, she said, but repeated and heightened exposure can harm health. She called this kind of virtual training a new frontier, particularly in countries like Japan, where performance demands are high and the population is ageing.
The participants in this study were young and healthy, not the patients the approach is ultimately meant to help. The groups who might benefit most, people with neurological or cardiovascular conditions and hospitalized patients, are the ones the work points toward, and testing in those groups is the logical next step.
Citations marquantes
Repeated and increased exposure to stress can be detrimental to health; this virtual training represents a new frontier, especially in countries like Japan.— Professor Dalila Burin, Tohoku University
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