期刊
ANNALS OF BEHAVIORAL MEDICINE
卷 38, 期 3, 页码 249-255出版社
OXFORD UNIV PRESS INC
DOI: 10.1007/s12160-009-9141-4
关键词
Physical activity; Ecological momentary assessment; Psychosocial factors; Middle-aged and older adults
Background National recommendations supporting the promotion of multiple short (10+ minute) physical activity bouts each day to increase overall physical activity levels in middle-aged and older adults underscore the need to identify antecedents and correlates of such daily physical activity episodes. Purpose This pilot study used Ecological Momentary Assessment to examine the time-lagged and concurrent effects of empirically supported social, cognitive, affective, and physiological factors on physical activity among adults age 50+ years. Methods Participants (N=23) responded to diary prompts on a handheld computer four times per day across a 2-week period. Moderate-to-vigorous physical activity (MVPA), self-efficacy, positive and negative affect, control, demand, fatigue, energy, social interactions, and stressful events were assessed during each sequence. Results Multivariate results showed that greater self-efficacy and control predicted greater MVPA at each subsequent assessment throughout the day (p<0.05). Also, having a positive social interaction was concurrently related to higher levels of MVPA (p=0.052). Conclusion Time-varying multidimensional individual processes predict within daily physical activity levels.
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