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To study the relationship between daily activity level and cognitive function in community-dwelling elderly. We collected demographic features, cognitive function, activity level and self-rating depression scale scores in 53 community-dwelling olderly aged 60 years or above. The activity level and moderate-to-vigorous physical activity (MVPA) time were assessed by using the accelerometer for 7 consecutive days. We compared activity level, MVPA time and depression scores between cognitive impaired and normal groups. Cognitive functions were compared in groups with different MVPA level, and the correlation between cognitive function and MVPA time was analysed. Of the 53 subjects, 27 had varying degrees of cognitive impairment. Individuals with cognitive impairment shown significantly shorter MVPA time and higher depression score compared to the cognitive normal group ( P  &lt; 0.05). After controlling for confounding factors (age, BMI), MVPA time was associated with cognitive function ( r  = 0.358,  P  = 0.009). The memory factor score correlated with MVPA time ( r  = 0.357,  P  = 0.012) and mean activity level ( r  = 0.287,  P  = 0.046). Moderate-to-vigorous physical activity in the elderly was positively related to their cognitive function. Strengthening daily activities may beneficial for the elderly to maintain better cognitive function.

The relationship between activity level and cognitive function in Chinese community-dwelling elderly