Cardiovascular disease and obesity are both significantly influenced by physical inactivity. A rapidly expanding corpus of research contends that features of the built environment might encourage adolescents to lead active lives. There are still issues with the present evidence for determining which aspects of the built environment give adolescents the opportunity to engage in leisure-time physical activity (LTPA). This study looked at the relationship between the characteristics of the built environment and moderate-to-vigorous leisure-time physical activity (Leisure-time MVPA) of adolescents.
2628 adolescents between the ages of 11 and 18 were chosen as study participants from 19 Suzhou urban communities. They must have resided in the neighborhood for longer than six months and be permanent residents there. The International Physical Activities Questionnaire (n = 2628) and the Neighborhood Environment Walkability Scale for Chinese Children (NEWS-CC) were used to collect the data. LTPA are connected to different modes: Walking, leisure-time MPA, and leisure-time VPA. Univariate analysis and multinomial logistic regression were used to screen for potential associations between the built environment and the leisure-time MVPA in adolescents.
Univariate analysis of the general demographic and built environment showed statistically significant differences in gender, residential density, accessibility, pedestrian safety, aesthetic and security (P < 0.05). Step by walking reference category, security (P < 0.05, OR = 1.131) were associated with adolescents' leisure-time MPA, aesthetics (P < 0.05, OR = 1.187) were associated with adolescents' leisure-time VPA, they both have a significant positive correlation.
Security was positively associated with adolescents’ leisure-time MPA, aesthetics was positively associated with adolescents’ leisure-time VPA. This suggests that built environment may associated with leisure-time MVPA of Suzhou adolescents.

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