Objective Maintaining a level of functional capacity is essential for healthy aging. In this research, the association between the change in the level of functional capacity and social network typology was explored over a two-year period. Participants were recruited from a community-based cohort study within Kashiwa City, Japan, and data from the years 2016 and 2018 were used. Cognitive functions, functional capacity, and social network typology were assessed using the Mini-Mental State Examination, the Japan Science and Technology Agency Index of Competence, and the Lubben Social Network Scale, respectively. Binomial logistic regression analysis was then conducted to evaluate the association of individuals’ personal network and their functional capacity. Results Results showed that, when compared to the group with both a high family and friend network, the group of community-dwelling older adults with both a low family and friend network (OR: 0.58, 95% CI: 0.34-1.00), and the group with a high family but low friend network demonstrated a lower functional capacity (OR:0.47, 95% CI: 0.26–0.85). Active social participation, facilitated by a friend network, could be a contributing factor to the maintenance of functional capacity.

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Introduction Designing community space for social participation of older adults is essential for healthy aging. The behavioral characteristics of the attendees have much to offer as they relate to social settings designed in the space. This study aims to elucidate the basic typology of the attendees considering their motivation for attendance and state of social connection. Methods Semi-structured interviews targeting attendees of Chiiki-Katsudokan, a space designed for social participation in a larger aging estate in Japan, were conducted in December 2021 (N=16, 16% male). Attendees were asked about their reasons for attending events at Chiiki-Katsudokan, interaction levels with other attendees, and levels of social participation during the COVID-19 pandemic. Results Based on the interviews, attendees were classified into three types: Seeker, Hobbyist, and Socializer. First, Seekers (n=3) used Chiiki-Katsudokan as the primary means of preventing social isolation. Amongst the three types, the social interaction level of Seekers was the lightest, and the opportunity decreased when Chiiki-Katsudokan closed during the quarantine. Second, the main motivation for Hobbyists (n=5) was the event contents which matched their interests. Hobbyists were also likely to engage in hobby networks, which continued privately during the pandemic. Finally, Socializers (n=8) attended Chiiki-Katsudokan to communicate with friends. Many were initially socially active and engaged in social interaction outside Chiiki-Katsudokan, e.g., teatime with friends, during the quarantine. Conclusion This study suggested that designing community space for social participation requires defining the varying levels of engagement and expecting relationships outside the space based on the behavioral characteristics of the attendees.