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Brain Fitness: Exercise Helps Mental Health According To New Research

by Zenger News
April 18, 2022
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Marlene of Yoga on the Move Berlin warms up prior online stream session in her home on March 25, 2020 in Berlin, Germany. Small businesses are trying ways of offering services for clients in the midst of the COVID-19 pandemic. (Photo by Maja Hitij/Getty Images)



By Darko Manevski

Looking after brain fitness may well involve nothing more than looking after physical health, according to new research.


A fresh look at the mechanisms involved in the relationship between physical and mental fitness suggests that the role exercise plays in maintaining insulin and body mass index levels may help protect brain volume, and thus help stave off dementia.

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The research was published in Neurology, the medical journal of the American Academy of Neurology, on April 13, 2022.

Author Geraldine Poisnel, Ph.D., of the Inserm Research Center in Caen, France, said: “These results may help us to understand how physical activity affects brain health, which may guide us in developing strategies to prevent or delay age-related decline in memory and thinking skills.

“Older adults who are physically active gain cardiovascular benefits, which may result in greater structural brain integrity.”

In contrast, researchers found that the relationship between exercise and the metabolism of glucose in the brain was not affected by insulin or body mass index (BMI) levels. Reduced glucose metabolism in the brain can be seen in people with dementia.

With the San Francisco skline in the background, a jogger runs through Dolores Park July 13, 2005 in San Francisco. Runner’s World Magazine has just named San Francisco the best city for running in the United States based on its weather, the number of running clubs, racing events and the the ample park space available for runners. (Photo by Justin Sullivan/Getty Images)

The study involved 134 people with an average age of 69 who had no memory problems. The people filled out surveys about their physical activity over the past year. They had brain scans to measure volume and glucose metabolism. Information was gathered on BMI and insulin levels as well as cholesterol, blood pressure, and other factors.

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People with the most physical activity had a higher total volume of grey matter in their brains than people with the least amount of physical activity, with an average of about 550,000 cubic millimeters (mm³) compared to about 540,000 mm³. When researchers looked only at areas of the brain affected by Alzheimer’s disease, they found the same results.

Those with the most activity also had a higher average rate of glucose metabolism in the brain than those with the least amount of activity.

: A man with a golden shovel on top of a large white brain marble sculpure by Jan Fabre, ‘Anthropology of a Planet’ is pictured during the “The Brain” exhibition at Bundeskunsthalle on January 31, 2022 in Bonn, Germany. The exhibitions runs until June 26th. (Photo by Andreas Rentz/Getty Images)

Higher physical activity was not associated with how much amyloid plaque people had in their brains. Amyloid plaque is a marker for Alzheimer’s disease.

Poisnel said more research is needed to understand the mechanisms behind these relationships, saying: “Maintaining a lower BMI through physical activity could help prevent disturbed insulin metabolism that is often seen in aging, thus promoting brain health.”

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The study does not prove that exercise protects brain volume. It only shows an association.

A limitation of the study is that people reported their own physical activity, so they may not remember it accurately.

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The post Brain Fitness: Exercise Helps Mental Health According To New Research appeared first on Zenger News.

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