Abstract
BackgroundNegative peer experiences may lead adolescents with overweight and obesity to be less active and engage in more sitting-related behaviors. Our study is among the first to empirically test these associations and hypothesized that 1) peer victimization would mediate the negative association between body weight status and moderate-to-vigorous physical activity (MVPA), and 2) peer victimization would mediate the positive association between body weight status and screen time. Differences by gender were also explored.MethodsParticipants were a part of the Year 1 data (2012–2013) from the COMPASS study, a prospective cohort study of high school students in Ontario and Alberta, Canada. The final sample consisted of 18,147 students in grades 9 to 12 from 43 Ontario secondary schools. The predictor variable was weight status (non-overweight vs. overweight/obese), the mediator was peer victimization, and the outcome variables were screen time and MVPA. Multilevel path analysis was conducted, controlling for clustering within schools and covariates. A few differences were observed between males and females; therefore, the results are stratified by gender.ResultsFor both males and females peer victimization partially mediated the association between weight status and screen time. Specifically, females with overweight/obesity reported 34 more minutes/day of screen time than did females who were not overweight and 2 of these minutes could be attributed to experiencing peer victimization. Similarly, males who were overweight/obese reported 13 more minutes/day of screen time than the males who were not overweight and 1 of these minutes could be attributed to experiencing more victimization. Males and females who were overweight/obese also reported less MVPA compared to those who were not overweight; however, peer victimization did not mediate these associations in the hypothesized direction.ConclusionsWe found that higher rates of peer victimization experienced by adolescents with overweight and obesity partially explained why they engaged in more screen time than adolescents who were not overweight. However, the effects were small and may be of limited practical significance. Because this is one of the first studies to investigate these associations, more research is needed before bully prevention or conflict resolution training are explored as intervention strategies.
Highlights
Negative peer experiences may lead adolescents with overweight and obesity to be less active and engage in more sitting-related behaviors
The first aim of the study was to examine whether peer victimization mediates the negative association between body weight status and physical activity (PA) in adolescents
Consistent with the model proposed by Salvy et al [12], our findings suggest that in both males and females the association between weight status and higher levels of screen time is partially explained by peer victimization
Summary
Negative peer experiences may lead adolescents with overweight and obesity to be less active and engage in more sitting-related behaviors. Adolescents who are overweight or obese may be vulnerable as they tend to exhibit even lower rates of PA and higher rates of screen time compared to their non-overweight counterparts [6, 7]. This is a particular concern because those who establish unhealthy habits early on in life tend to maintain them into adulthood [8,9,10]. To inform interventions and health promotion programs, it is important to gain an understanding of why adolescents who are overweight or obese tend to be less active and engage in higher levels of screen time
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