In women, the probability of cognitive decline may relate to physical activity, implies a multi-site study conducted in the United States. Physically active women showed a lower rate of cognitive impairment, than non-active women.

In the study, 9,334 women reported amounts of physical activity during teenage years, at age 30, at age 50 and during the latter part of life. Researchers used statistics to determine the relationship between physical activity and the probability of cognitive impairment. They also adjusted for confounding variables, such as smoking and diabetes. A mental state exam assessed cognitive function.

Participants who recalled being active showed a lower rate of cognitive impairment compared to those who were not active. Physical activity during teenage years showed the strongest association with a decreased likelihood of cognitive impairment.

This study used a large sample size and adjusted data for disease states and lifestyle choices. However, similar studies are needed in men before a conclusion can be generalized to the public. Also, the participants self-reported levels of physical activity, which may be inaccurate.

For more information about cognitive decline, please visit Natural Standard's Medical Conditions database.

1. Middleton LE, Barnes DE, Lui LY, et al. Physical activity over the life course and its association with cognitive performance and impairment in old age. J Am Geriatr Soc. 2010 Jul;58(7):1322-6. View Abstract
2. Natural Standard: The Authority on Integrative Medicine. www.naturalstandard.com