The Association Between Neighborhood Public Transportation Usage and Youth Physical Activity.

Introduction Routine adolescent physical activity is a well-established predictor of positive health across the lifespan, although wide disparities in youth physical activity engagement persist across sex and race/ethnicity. Transportation barriers may be related to adolescents’ ability to access physical activity opportunities. This study examines the association between neighborhood public transportation usage and adolescent physical activity using a national sample. Methods Cross-sectional data were drawn from the Family Life, Activity, Sun, Health, and Eating study (2014), a national sample of adolescents aged 12–17 years. Linear regression examined the association between neighborhood public transportation usage on the basis of neighborhood-level public transportation use and individual-level youth moderate-to-vigorous physical activity minutes per week. Models were developed for weekday, weekend, and combined moderate-to-vigorous physical activity for all youth and across sex and race/ethnicity subgroups. Analyses were run in 2020. Results The final analytic data set included 1,247 adolescents aged 12–17 years (71% non-Hispanic White, 49% male, mean age=14.52 [SD=1.59] years). Adjusted models showed a stronger magnitude of association between high neighborhood public transportation usage and both weekday (β=8.79, 95% CI=1.00, 16.59) and combined (β=13.74, 95% CI=1.14, 26.35) moderate-to-vigorous physical activity than between low/moderate neighborhood public transportation usage and moderate-to-vigorous physical activity. The magnitude of the neighborhood public transportation usage–moderate-to-vigorous physical activity association was strongest among non-Hispanic Black and Hispanic adolescent girls. Conclusions This study found an association between neighborhood public transportation usage and adolescent moderate-to-vigorous physical activity, particularly among non-Hispanic Black and Hispanic adolescent girls. Findings from this research have the potential to inform targeted interventions for promoting adolescent physical activity to ultimately reduce chronic health disparities across the lifespan.