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ABSTRACT: Introduction
The associations between self-reported current and past leisure time physical activity (LTPA) and Alzheimer's disease (AD) incidence were determined using data from the multiethnic Washington/Hamilton Heights-Inwood Columbia Aging Project (WHICAP) study.Methods
The metabolic equivalent of LTPA energy expenditure was calculated for self-reported current and past LTPA for 1345 older adults. A Cox proportional hazard model was conducted to estimate the association between LTPA (low, middle, and high) and incident AD risk.Results
Comparing high to low level, current and past LTPA were both associated with reduced AD risk, with hazard ratio (95% confidence interval) = 0.39 (0.20-0.75) and 0.37 (0.18-0.75), respectively. Compared with "always low," "increased" and "always high" LTPA throughout life were associated with reduced AD risk, with hazard ratio (95% confidence interval) = 0.60 (0.36-0.99) and 0.28 (0.08-0.94), respectively. Light- and moderate-intensity LTPA were associated with lower AD risk.Discussion
LTPA both throughout life and later in life are associated with lower risk of AD.
SUBMITTER: Ogino E
PROVIDER: S-EPMC6948182 | biostudies-literature | 2019 Dec
REPOSITORIES: biostudies-literature
Ogino Erika E Manly Jennifer J JJ Schupf Nicole N Mayeux Richard R Gu Yian Y
Alzheimer's & dementia : the journal of the Alzheimer's Association 20191003 12
<h4>Introduction</h4>The associations between self-reported current and past leisure time physical activity (LTPA) and Alzheimer's disease (AD) incidence were determined using data from the multiethnic Washington/Hamilton Heights-Inwood Columbia Aging Project (WHICAP) study.<h4>Methods</h4>The metabolic equivalent of LTPA energy expenditure was calculated for self-reported current and past LTPA for 1345 older adults. A Cox proportional hazard model was conducted to estimate the association betwe ...[more]