AI Article Synopsis
- This study analyzed how physical activity, depression, and sleep are interconnected and their combined impact on cognitive function in older adults living in the community.
- Researchers assessed 864 participants using various questionnaires to measure these factors and also collected demographic data.
- The findings showed that physical activity positively affects cognitive function both directly and indirectly through its relationship with depression, with sleep playing a significant role in these connections, and the effects vary with age.
Article Abstract
This cross-sectional, observational study aimed to integrate the analyses of relationships of physical activity, depression, and sleep with cognitive function in community-dwelling older adults using a single model. To this end, physical activity, sleep, depression, and cognitive function in 864 community-dwelling older adults from the Suwon Geriatric Mental Health Center were assessed using the International Physical Activity Questionnaire, Montgomery-Asberg Depression Rating Scale, Pittsburgh Sleep Quality Index, and Mini-Mental State Examination for Dementia Screening, respectively. Their sociodemographic characteristics were also recorded. After adjusting for confounders, multiple linear regression analysis was performed to investigate the effects of physical activity, sleep, and depression on cognitive function. Models 4, 5, 7, and 14 of PROCESS were applied to verify the mediating and moderating effects of all variables. Physical activity had a direct effect on cognitive function (effect = 0.97, < 0.01) and indirect effect (effect = 0.36; confidence interval: 0.18, 0.57) through depression. Moreover, mediated moderation effects of sleep were confirmed in the pathways where physical activity affects cognitive function through depression (F-coeff = 13.37, < 0.001). Furthermore, these relationships differed with age. Thus, the associations among physical activity, depression, and sleep are important in interventions for the cognitive function of community-dwelling older adults. Such interventions should focus on different factors depending on age.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9737085 | PMC |
| http://dx.doi.org/10.3390/ijerph192315655 | DOI Listing |
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