Po-Wen Ku1,2, Kenneth R Fox3, Yung Liao4, Wen-Jung Sun5, Li-Jung Chen6,7. 1. Graduate Institute of Sports and Health, National Changhua University of Education, Changhua, Taiwan. 2. Department of Epidemiology and Public Health, University College London, London, UK. 3. Centre for Exercise, Nutrition and Health Sciences, University of Bristol, Bristol, UK. 4. Department of Health Promotion and Health Education, National Taiwan Normal University, Taipei, Taiwan. 5. Family Medicine Department, Taipei City Hospital Zhongxing Branch, Taipei, Taiwan. 6. Department of Epidemiology and Public Health, University College London, London, UK. ljchen@ntupes.edu.tw. 7. Department of Exercise Health Science, National Taiwan University of Sport, Taichung, Taiwan. ljchen@ntupes.edu.tw.
Abstract
PURPOSE: This study aimed to examine the longitudinal independent associations of objectively assessed physical activity at different intensities, including moderate-to-vigorous physical activity, light physical activity, and sedentary behaviors, with dimensions of subjective well-being in older adults. METHODS: A total of 307 community-dwelling older adults aged 65 or older in Taiwan were interviewed in 2012. Physical activity was assessed using triaxial accelerometry. Subjective well-being was measured using the Chinese Aging Well Profile. Among them, 295 attended an 18-month follow-up study in 2013. Hierarchical linear regression models with adjustment for socio-demographic variables, lifestyle behaviors, health status, accelerometer wear time, and state of well-being at baseline were performed. RESULTS: The hierarchical regression models (step one) demonstrated that moderate-to-vigorous physical activity was associated with higher levels of follow-up general and specific dimensions of well-being (β = 0.19-0.24) with the exception of material and environmental well-being. After light physical activity was further included in the models (step two), the associations of moderate-to-vigorous physical activity with general, physical, and independence well-being remained, while the contribution of light physical activity was not significant. In contrast, light physical activity was a significant predictor of psychological, learning and growth, and social well-being in these models (β = 0.20-0.24), while these associations with moderate-to-vigorous physical activity were attenuated or not significant. Sedentary time was not related to any dimension of well-being. DISCUSSION: The findings indicate that moderate-to-vigorous physical activity and light physical activity are associated with different dimensions of well-being, suggesting that different intensities of late-life physical activity make distinct contributions to well-being.
PURPOSE: This study aimed to examine the longitudinal independent associations of objectively assessed physical activity at different intensities, including moderate-to-vigorous physical activity, light physical activity, and sedentary behaviors, with dimensions of subjective well-being in older adults. METHODS: A total of 307 community-dwelling older adults aged 65 or older in Taiwan were interviewed in 2012. Physical activity was assessed using triaxial accelerometry. Subjective well-being was measured using the Chinese Aging Well Profile. Among them, 295 attended an 18-month follow-up study in 2013. Hierarchical linear regression models with adjustment for socio-demographic variables, lifestyle behaviors, health status, accelerometer wear time, and state of well-being at baseline were performed. RESULTS: The hierarchical regression models (step one) demonstrated that moderate-to-vigorous physical activity was associated with higher levels of follow-up general and specific dimensions of well-being (β = 0.19-0.24) with the exception of material and environmental well-being. After light physical activity was further included in the models (step two), the associations of moderate-to-vigorous physical activity with general, physical, and independence well-being remained, while the contribution of light physical activity was not significant. In contrast, light physical activity was a significant predictor of psychological, learning and growth, and social well-being in these models (β = 0.20-0.24), while these associations with moderate-to-vigorous physical activity were attenuated or not significant. Sedentary time was not related to any dimension of well-being. DISCUSSION: The findings indicate that moderate-to-vigorous physical activity and light physical activity are associated with different dimensions of well-being, suggesting that different intensities of late-life physical activity make distinct contributions to well-being.
Keywords:
Accelerometry; Aging; Light intensity; Quality of life; Sedentary
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