“…The social-ecological theory of human behavior suggests that environmental factors in cities influence the likelihood of people being physically active (Kraus et al, 2015;Sallis, Bauman, & Pratt, 1998;Sallis, Floyd, Rodriguez, & Saelens, 2012;Zuniga-Teran et al, 2017). Many environmental factors, such as higher housing density, easier access to transit, and greater land use mix, have been found to be influential in determining people's physical activities (Coogan et al, 2009;Frank, Saelens, Powell, & Chapman, 2007;Kerr et al, 2014;Leslie et al, 2007;Zuniga-Teran et al, 2017). The connection between human physical activities and environmental factors gives a motivation to the development of the Walk Score, which incorporates built environment variables together with some other variables of amenity categories such as grocery stores, restaurants, parks, banks, schools, movie theaters, libraries, and other urban facilities to indicate a neighborhood's capacity to support physical activity (Carr, Dunsiger, & Marcus, 2010;Duncan, Aldstadt, Whalen, Melly, & Gortmaker, 2011;Walk Score, 2017).…”