Abstract Background Increasing emphasis has been placed on improving physical activity levels through multilevel interventions. This study aims to examine moderating effects of neighborhood safety (crime and traffic) and social support (from parent and sibling/peer) for physical activity in the relationship between the built environment and moderate-to-vigorous physical activity (MVPA... https://girvymktq11c.blog2freedom.com/34914636/transmission-of-sars-cov-2-from-humans-to-a-16-year-old-domestic-cat-with-comorbidities-in-pennsylvania-usa