This study examined the association between achieving the recommended physical activity level and quality of life after controlling for depression. Health information from adults aged 65 years and older, who had participated in the seventh 2018 Korea National Health and Nutrition Examination Survey, was used. Five covariate adjustment models were used to derive robust estimates of the association between physical activity practice levels, depression, and older adults' quality of life. A total of 1,336 older adults was extracted from the seventh 2018 Korea National Health and Nutrition Examination Survey, and 31% of the older adults achieved the recommended physical activity level, whereas 69% did not. We found that the achievement of physical activity practice levels is significantly associated with the quality of life of the older adults (β = 0.024-0.031, all p < .05). Our results could be used for advocating for welfare policy changes that promote physical activity to prepare for the upcoming super-aging society.
Keywords: KNHANES; aging; cross-sectional study; exercise; mediation analysis.