The relationship between resistance training body composition and self-esteem in adolescents

Abstract

Introduction: Childhood obesity and mental health continue to be a growing concern. Today, children are exposed to technology and other gadgets increasing their opportunities to be sedentary thus, children’s lack of physical activity, could increase negative self-esteem reports. Because of this, engaging in an active lifestyle may help improve self-esteem in adolescents. Purpose: The purpose of this study is to assess how body composition and physical activity relates to self-esteem within adolescents. Methods: The study was completed following 15 weeks. A total sample of 44 (28 boys, 16 girls) subjects gave assent and parental consent to be included in the study. Students participated in various weightlifting classes in which they completed three mesocycles of resistance training during the semester. To test pre and post variables, Bioelectrical Impedance Analyzers (BIA) were used to assess body composition (BC). Self-esteem (SE) was measured by the Rosenburg Self-esteem Scale. A Digital Hand Dynamometer was be used to assess the effect of resistance training on student’s handgrip strength (HGS). Results: Due to unequal sample-sizes between genders, the primary statistics of this study were assessed as an independent t-test (collapsed across gender). Results revealed no significant difference for BC or HGS (p = 0.171 – 0.619), however, there was a significant difference between pre and post-test for SE (p = 0.001). Pre versus post SE mean was 26.68 and 30.36 respectively. Additionally independent t-tests were assessed per gender. For females, no significance was observed for any variables (p = 0.059 – 0.729). For males, no differences were seen for FM or HGS (p = 0.161 – 0.687), however, there was a significant difference for SE (p = 0.004). Lastly, a Pearson Correlation Coefficient was used to examine the relationships between FM, HGS and SE. Results from Pearson Correlation Coefficient test revealed no significant differences (p = 0.281 – 0.455) or effect sizes (-.116 - .100). Conclusion: The present findings suggest that structured physical activity, can have a positive outcome on high-school aged self-esteem values. While no significant differences were observed for body composition, or hand grip strength, it is possible that engaging in structured physical activity can increase adolescents’ self-esteem. Statistics suggest that males positive SE could be attributed to structured physical activity, however, more studies are needed to support this theory.