Purpose: To investigate the association between odds of less than 7 hours/week of physical activity (PA) and opportunities for exercise (recreation facilities and green space). Methods: We measured self-reported hours of PA in boys and girls using the Health Behavior in School-Aged Children 2006 survey (n = 6046). We conducted multi-level logistic analyses to examine the relationship between the odds of less 7 hours weekly PA and road connectivity, green space ratio, and number of recreation facilities surrounding each school (n = 80). We controlled for confounding variables at the individual (family social class, perceived neighborhood wealth, family affluence) and neighborhood levels (average household income, urbanicity). Findings: Final models in mutually adjusted analyses showed boys of low social class or low affluence had greater odds (OR = 1.37 and 1.52 respectively) of not reaching 7 hours of PA/week. Girls living in poor areas or of low affluence had greater odds (OR = 3.13 and 2.23) of not reaching PA recommendations. Fewer parks was significantly related to greater odds of not exercising daily for boys (OR = 1.35) but not for girls. Conclusions: The odds of exercising less than 7 hours/week were strongly correlated with family affluence for both boys and girls, while associations were found for family social class for boys and perceived neighborhood wealth for girls. Fewer parks in the surrounding school neighborhood was also associated with the odds of less than daily exercise in boys. Results indicate the built environment may affect PA differently for boys and girls.
schools; youth; physical activity; built environment