Gender differences in the association between physical activity and health-related quality of life among community-dwelling elders.

Abstract

Physical activity can improve health-related quality of life (HRQoL) in older adults. However, the differential effects of gender on quality of life are unclear. To determine the association between physical activity and HRQoL in men and women. This was a cross-sectional study conducted from March to August 2011. Community-dwelling older people aged 65years or older were eligible. Physical activity in kcal per week was measured with the International Physical Activity Questionnaire (IPAQ)-Taiwan version. HRQoL was measured with the 36-Item Short Form Survey (SF-36) questionnaire. Cognitive function and depression were assessed using the Mini-Mental State Examination (MMSE) and Patient Health Questionnaire-9 (PHQ-9). The relationship between physical activity and HRQoL in men and women was investigated by a multiple linear regression model. A total of 188 older people (M: 50.5%) participated in this study. The mean ages of men and women were 71.9 ± 5.3 and 77.1 ± 6.4years, respectively (p < 0.001). Older women had higher physical activity levels than men (4786.1 ± 1065.6 vs 4422.2 ± 1114.3kcal/week, p = 0.023). After adjusting for covariates, multiple linear regression analysis showed that older men with higher physical activity levels had better scores on both the physical component summary (PCS) (p = 0.031) and mental component summary (MCS) (p = 0.007) than men with lower levels. Furthermore, older men with higher moderate-vigorous physical activity levels had better scores on the PCS than older men with lower activity levels, and older men with higher walking physical activity levels had better scores on the MCS than older men with lower activity levels. In this study, older women were more physically active than older men. However, older men (but not older women) with higher physical activity had better HRQoL. The association between physical activity and HRQoL differed between men and women.