Influence of exercise and dietary habits on the association of alpha-actinin-3 gene polymorphisms with physical function and body composition in community-dwelling individuals aged 60 years and older.

Aim: Alpha-actinin 3 (ACTN3) is associated with diminished physical function and muscle mass in older individuals. However, the effects of lifestyle on this relationship remain unclear. This study explored whether the association between ACTN3 polymorphisms and physical function and body composition varied based on exercise and dietary habits.

Averting older adults' memory function decline via meaningful activities: a follow-up longitudinal study.

Purpose: The purpose of the study was to investigate the effects of satisfaction with meaningful activities and their performance on the memory function among community-dwelling older adults 3 years later.

Methods: A longitudinal analysis was conducted on 288 community-dwelling older adults aged 65 years and more who had completed the survey in 2019 and 2022 as participants in the Tarumizu Study. Meaningful activities were assessed in 2019 using the Aid for Decision-Making in Occupation Choice for activities.

Associations between Driving Status, Frequency of Transport use after Driving Cessation, and Social Frailty among Middle-Aged and Older Adults.

Background: The use of transport other than cars is a modifiable factor in the association between driving cessation and social frailty. Clarifying this relationship may serve as a new preventive measure against social frailty among current non-drivers. This study examined the potential association of driving status and transport use with social frailty, as well as between the frequency of transport use and social frailty, among current non-drivers.