Determinants of new participation in sports groups among community-dwelling older adults: Analysis of a prospective cohort from The Otassha Study. - Ejiri, Manami; Kawai, Hisashi; Fujiwara, Yoshinori; Ihara, Kazushige; Watanabe, Yutaka; Hirano, Hirohiko; Kim, Hunkyung; Obuchi, Shuichi (PLoS ONE, 2022)