地域在住高齢者の余暇活動量，家庭内活動量，仕事関連活動量と身体機能との関連性

Abstract

The study objective was to cross-sectionally examine the relationships among leisure-time, household, and occupational physical activity with physical functions in Japanese older adults. We randomly enrolled 189 community-dwelling older adults, aged 65 to 85 years, as subjects from the Basic Resident Register of Kasama City, Ibaraki prefecture. Physical activity was assessed by the Physical Activity Scale for the Elderly. Analysis of covariance was performed to determine the relationships between physical activity and physical functions, after adjustment for age and sex. Leisure-time physical activity significantly correlated with one-leg balance with eyes open, sit and reach, timed standing test from along sitting position on the floor, functional reach, 5-repetition sit-to-stand, timed up and go, 5-m habitual walk, choice stepping reaction time, and power in sit-to-stand tests. Household physical activity was significantly related to 5-repetition sit-to-stand and ability in sit-to-stand. Total (leisure-time plus household plus occupational) activity was significantly correlated with one-leg balance with eyes open, functional reach, and power in sit-to-stand tests. Post-hoc testing indicated that the levels of physical functions were higher in the subjects of the third tertile than in those of the first or second tertile. No difference was found in physical functions between the first and second tertile. Leisure-time physical activity was related to many physical functions. Household physical activity was also related to lower-extremity functions. Our data suggest that medium- or high-level physical activity may be necessary for older adults to maintain their physical functions.