Dr Ickpyo Hong Yonsei UniversityTopic: Association Between Dementia and Psychological Well-Being: The Mediating Role of Physical Ability Abstract: Objective: With the rising prevalence of dementia posing significant challenges to healthcare systems, enhancing the quality of life for older adults with dementia is a critical research focus. This study aimed to examine how physical function and grip strength mediate the relationship between dementia and psychological well-being in older adults. Study Design: A cross-sectional analysis utilizing data from the 2022 National Health and Aging Trends Study. Methods: Path analysis was used to assess the mediating roles of physical function and grip strength in the link between dementia and psychological well-being. Dementia status served as the independent variable, while mediators included scores from the Short Physical Performance Battery (SPPB) and grip strength (measured in kilograms). Psychological well-being, the dependent variable, was evaluated through composite scores reflecting feelings of vitality and self-assurance. Findings: Of the 3,898 older adults analyzed, 206 (5.28%) had dementia. The SPPB scores mediated 45.4% of the relationship between dementia and psychological well-being, while grip strength mediated 12.2%. Conclusion: These results highlight the significant role of physical function and grip strength in the connection between dementia and psychological well-being among older adults. The findings suggest that rehabilitation interventions could prioritize enhancing physical capabilities to support psychological well-being in this population. |