OBJECTIVES: The authors tested the hypothesis that total daily physical activity is related to the level of cognition in older persons. DESIGN: Cross-sectional study. SETTING: Retirement communities across the Chicago metropolitan area. PARTICIPANTS: Five hundred twenty-one older persons without dementia. MEASUREMENTS: Participants underwent structured evaluation of cognition and objective measures of total daily physical activity were collected using actigraphy. RESULTS: In a linear regression model adjusted for age, sex, and education, total daily activity was associated with a global measure of cognition. By contrast, self-report physical activity was not associated with cognition. Further analyses showed that total daily activity was related to all five cognitive subscales. CONCLUSIONS: Objective measures of total daily physical activity were associated with a broad range of cognitive abilities in older persons. These findings support the link between physical activity and cognition in the elderly.
OBJECTIVES: The authors tested the hypothesis that total daily physical activity is related to the level of cognition in older persons. DESIGN: Cross-sectional study. SETTING: Retirement communities across the Chicago metropolitan area. PARTICIPANTS: Five hundred twenty-one older persons without dementia. MEASUREMENTS: Participants underwent structured evaluation of cognition and objective measures of total daily physical activity were collected using actigraphy. RESULTS: In a linear regression model adjusted for age, sex, and education, total daily activity was associated with a global measure of cognition. By contrast, self-report physical activity was not associated with cognition. Further analyses showed that total daily activity was related to all five cognitive subscales. CONCLUSIONS: Objective measures of total daily physical activity were associated with a broad range of cognitive abilities in older persons. These findings support the link between physical activity and cognition in the elderly.
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