4.6 Article

Predictors of Decreased Physical Activity Level Over Time Among Adults A Longitudinal Study

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AMERICAN JOURNAL OF PREVENTIVE MEDICINE
卷 47, 期 2, 页码 123-130

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ELSEVIER SCIENCE INC
DOI: 10.1016/j.amepre.2014.04.003

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Background: Leisure-time physical activity (LTPA) plays a key role in chronic disease prevention and health promotion. The impact of life-changing events on LTPA among adults is unknown. Purpose: To examine the association between life-changing events and decreased LTPA levels. Methods: Eight cycles of Canadian National Population Health Survey data were used for this study. A total of 12,901 respondents aged >= 18 years in 1994-1995 completed biannual follow-ups until 2008-2009. The association between life-changing events and decreased LTPA in any 2-year period was assessed with adjustment of potential confounding factors. Data were analyzed in 2012. Results: From 1994-1995 to 2008-2009, nine of ten people changed their LTPA levels. Within each 2-year period, individuals were more likely to decrease their LTPA levels if they married within the 2-year period (men); became or remained overweight/obese (women); remained a regular smoker (men); became or remained unhealthy (men and women); developed or continued to have body pain (women); and acquired social support or remained without support (men). Conclusions: Most people change their LTPA levels or patterns, which are significantly influenced by life-changing events. An improved understanding of factors that influence LTPA may help better target those at high risk. Crown Copyright (C) 2014 Published by Elsevier Inc.

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