“…Although various studies have identified determinants of homebound status and out-of-home behavior (Fujita et al, 2004;Ganguli, Fox, Gilby, & Belle, 1996;Jing, Wang, Zhang, Yao, & Xing, 2017;Murayama, Yoshie, Sugawara, Wakui, & Arami, 2012;Nakamura & Yamada, 2009;Negrón-Blanco et al, 2016;Smith, Chen, Clarke, & Gallagher, 2016;Todo et al, 2015), evidences about the environmental determinants of out-of-home behavior among older adults are still inconsistent. According to physical activity studies using an ecological model, out-of-home time among older adults would be influenced by both social and physical environmental factors.…”