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Background: This study aimed to estimate the prevalence and trends of participation in physical activity (PA) in Korean adults. Methods: The Korea National Health and Nutrition Examination Survey (KNHANES; 2009–2013) and the Korea Community Health Survey (KCHS; 2009–2013) were used to estimate the prevalence of PA. Age standardization was performed using population projections for Korea in 2005 as a standard population. Trends of the prevalence from 2009 to 2013 were assessed by joinpoint regression analysis. Results: The age-standardized prevalence for achieving the recommended level of PA was 63.0% in KNHANES and 64.5% in KCHS for men, and 53.7% in KNHANES and 56.3% in KCHS for women. Decreasing trends were observed for the prevalence of achieving the recommended level of PA in the KNHANES and KCHS; however, only the trend for women in KNHANES was statistically significant. Conclusions: Approximately, 60% of adults participate in the recommended level of PA in Korea. The survey design and characteristics should be considered when interpreting the prevalence of PA from different databases.
Park, J. Choi, Song, Kang, and J.-Y. Choi are with the Department of Biomedical Sciences, Graduate School, Seoul National University, Seoul, Korea. Shin, Song, Kang, and J.-Y. Choi are with the Department of Preventive Medicine, College of Medicine, Seoul National University, Seoul, Korea. Shin, Kang, and J.-Y. Choi are also with Cancer Research Institute, Seoul National University, Seoul, Korea. M. Lee is with the College of Physical Education and Sport Science, Kookmin University, Seoul, Korea. Kim is with the Division of Epidemiology and Health Index, Center for Genome Science, National Research Institute of Health, Centers for Disease Control and Prevention, Chungcheongbuk-do, Korea. J.-k. Lee is with the JW Lee Center for Global Medicine, College of Medicine, Seoul National University, Seoul, Korea; and also the Department of Family Medicine, College of Medicine, Seoul National University, Seoul, Korea. Kang is also with the Institute of Environmental Medicine, Medical Research Center, Seoul National University, Seoul, Korea.