Physical Activity, Screen Time, and Obesity

A Statistical Inquiry into Latina/o Youth

Abstract

Background and Purpose: Overweight and obesity have been identified by the World Health Organization as a global epidemic and disproportionately affects minority populations in the United States. This study explored cross-sectional associations with TV viewing, physical activity, video game playing, gender, and Latina/o ethnicity with Body Mass Index (BMI). Methods: Data from the 2011 Youth Risk Behavior Surveillance System (YRBSS) were utilized (N=15,503). Results: Time spent in physical activity, watching television, playing video games, male gender, and Latina/o ethnicity status were all significantly associated with increased risk of overweight and obesity, but age was not. There was also a significant interaction effect in which above-median levels of physical activity had a stronger relationship with lower overweight/obesity rates among non-Latinos compared to Latinos. Conclusion: Our findings support previous findings regarding well-known correlates of overweight and obesity. The significant interaction effects suggest that the relationships of these correlates are nuanced, and future interventions may be more effective if demographic-specific relationships between correlates and obesityrelated outcomes are considered.