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.
Older adults gradually decrease their independence with activities of daily living (ADL) due to aging. The coronavirus disease-19 (COVID-19), the recent pandemic, can accelerate the decline in functions, such as ADL. This study aimed to examine whether there is an association between positive COVID-19 results and decreased independence with ADL in older adults. Data for a total of 3,118 older adults were extracted from the 2020 National Health and Aging Trends Study–COVID-19. A total of 71 (2.29%) participants presented with positive COVID-19 tests. There was a significant association between a positive COVID-19 result and decreased independence with ADL (relative risk [RR] = 1.47, 95% confidence interval [CI] = [1.11, 1.96], p = .0079). The study findings revealed that COVID-19 survivors had a high risk of decreased independence with ADL. These findings indicate that COVID-19 survivors have residual functional deficits and would need comprehensive health care services.
Social participation is associated with cognitive function; however, their causal relationships have not been reported yet. This study was designed to examine the autoregressive effects and bidirectional causal relationship between social participation and cognitive function. In this secondary longitudinal data analysis, we enrolled 4,834 Korean adults. A cross-lagged panel model with fixed effects was used to examine the causal relationships between social participation and cognitive function. Both participation (unstandardized coefficient = .370, p < .001) and cognitive function (unstandardized coefficient = .151, p < .001) had positive autoregressive effects over time. Participation had a cross-lagged effect on cognitive function (unstandardized coefficient = .061, p < .001). However, the cross-lagged effects of cognitive function on participation were not statistically significant (unstandardized coefficient = .051, p = .312). Various health-care programs that promote social participation and improve cognitive function must be established. Additional studies are required to confirm the causal effects of cognitive function on participation.
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