In the April 2003 issue of the Journal of the American Geriatrics Society, Barnes et al. investigated whether cardiorespiratory fitness is associated with cognitive function maintenance. The study lasted 6 years and involved 349 community-dwelling adults ages 55 and older without evidence of cardiovascular disease, musculoskeletal disability, or cognitive impairment at baseline. Participants with poorer baseline cardiorespiratory fitness did not perform as well on all cognitive tests 6 years later.

Read the complete article: Barnes, D. E., Yaffe, K., Satariano, W. A., & Tager, I. B. (2003). A longitudinal study of cardiorespiratory fitness and cognitive function in healthy older adults. Journal of the American Geriatrics Society, 51(4), 459-465.