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Muscle strength affects brain health

04.09.2022

Canadian scientists have found a link between low muscle mass and cognitive decline.

The experts analyzed the results of the Canadian Longitudinal Study of Aging (CLSA), conducted over a period of three years, and revealed how muscle mass affects the development of cognitive functions.

The researchers were interested in whether muscle weakness was associated with a risk of dementia. To do this, they studied questionnaires from 8 participants aged 279 and over on how low muscle mass affects further cognitive decline in three areas - memory, executive function and psychomotor speed.

"We found that a decrease in muscle mass over three years was accompanied by a deterioration in cognitive function," said Stephanie Chevalier, lead author of the study at the McGill University Health Center.

Executive functions are important in daily activities and behavior as they help maintain attention, think clearly, and make decisions. A decrease in muscle strength negatively affects these qualities and contributes to the development of dementia. In addition, muscles are a reservoir for proteins that support many of the body's processes.

Physical exercise, especially for endurance and nutrition with enough protein, maintains muscle mass for many years and keeps the brain clear.

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