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Home Life Style Health & Fitness Regular Exercise can Prevent Brain Shrinkage in Older Adults: Study

Regular Exercise can Prevent Brain Shrinkage in Older Adults: Study

Exercise may slow brain aging in older adults

Regular walking, gardening, swimming and dancing may slow brain aging and prevent brain shrinkage in older adults, say health and lifestyle researchers.

The study used magnetic resonance imaging (MRI) scans to measure the brains of people with a range of activity levels, including those who were inactive to those who were very active. The scans showed less active people had smaller brain volume, the researchers said.

“These results are exciting, as they suggest that people may potentially prevent brain shrinking and the effects of aging on the brain simply by becoming more active,” said study author Yian Gu from Columbia University in the US. Recent studies have shown that as people age, physical activity may reduce the risk of cognitive decline and dementia.

“Our study used brain scans to measure the brain volumes of a diverse group of people and found that those who engaged in the top third highest level of physical activity had a brain volume the equivalent of four years younger in brain aging than people who were at the bottom third activity level,” Gu added.

The study involved 1,557 people with an average age of 75. None had dementia, but 296 people had mild cognitive impairment and 28 per cent had the APOE gene that is linked to a greater risk of Alzheimer’s disease.

Adults brain
Less active adults have a smaller brain volume. (Representational Image). Pixabay

Participants were given physical exams, thinking and memory tests, and were asked about their daily tasks and other physical activities. Researchers then calculated how much time and energy each person spent on those tasks and activities.

Researchers divided people into three groups: those who were inactive; those who were somewhat active meaning each week they either had roughly two-and-a-half hours of low-intensity physical activity, one-and-a-half hours of moderate physical activity or one hour of high-intensity physical activity; and those who were most active meaning each week they either had seven hours of low-intensity physical activity, four hours of moderate physical activity or two hours of high-intensity physical activity.

Researchers then reviewed MRI brain scans of all participants and found that when compared to the people in the inactive group, those who were most active had larger total brain volume. “Our results add to the evidence that more physical activity is linked to larger brain volume in older people,” said Gu.

Also Read- Here’s Why Older Obese Workers Are at a High Risk of Losing Jobs

“It also builds on evidence that moving your body more often throughout one’s life may protect against loss of brain volume,” Gu added. The study is scheduled to be presented at the American Academy of Neurology’s 72nd Annual Meeting in Toronto, Canada from April 25 to May 1. (IANS)

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