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Moon Su Kwak 1 Article
Association of social network size and composition with physical activity in Korean middle-aged adults
Moon Su Kwak, So Mi Jemma Cho, Jee-Seon Shim, Dae Jung Kim, Yoosik Youm, Hyeon Chang Kim
Epidemiol Health. 2020;42:e2020070.   Published online November 25, 2020
DOI: https://doi.org/10.4178/epih.e2020070
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
Physical activity (PA) is an established protective factor for many chronic diseases. Numerous studies have established positive relationships between social networks and PA. Accordingly, this study examined the relationship between social network structures (specifically the network size and the number and proportion of same-sex alters) and self-reported PA in Korean middle-age adults, where the term “alter” refers to a respondent’s social network members.
METHODS
We analyzed 8,092 participants of the Cardiovascular and Metabolic Diseases Etiology Research Center cohort. We assessed the association between each network structure variable and PA level using a linear regression model. Then, we employed logistic regression to evaluate associations between social network structure and adherence to guideline-recommended exercise levels. Socio-demographic factors and health status measures were used as covariates.
RESULTS
In both sexes, the social network size and proportion of same-sex network members showed positive relationships with total and moderate-to-vigorous PA. Notably, female participants with a greater number of kin were more likely to satisfy the recommended amount of total PA.
CONCLUSIONS
These findings suggest that large scale, same-sex intervention programs can help to achieve recommended PA regimens.
Summary
Korean summary
이 연구는 30-64세 중년의 한국인 8,092(남자 2,805, 여자 5,207)명에서 사회연결망 특성과 신체활동량의 관련성을 평가했다. 남녀 모두에서 사회연결망의 크기가 클수록, 연결망내 동성인 사람의 비중이 높을수록 신체활동량이 많았다. 사회연결망 크기와 연결망내 동성인 사람의 비중은 권장 신체활동량을 충족률과도 양의 관련성을 보였다. 반면, 연결망내 친족의 비중이 높은 경우는 오히려 권장신체활동량을 충족할 가능성이 낮았다.

Epidemiol Health : Epidemiology and Health