Relative contribution of physical fitness determinants to skill performance in trampoline gymnastics: a multivariate analysis

Introduction: Standardized physical fitness test batteries were widely used in trampoline gymnastics for evaluation and selection. However, the independent contribution of these determinants to judge-rated skill performance in youth athletes remained unclear. Therefore, this study examined the relative contribution of selected physical fitness variables using a multivariate approach. Objective: To examine the relative contribution of selected physical fitness variables to judge-rated skill performance in youth trampoline gymnasts using a multivariate approach. Methodology: A cross-sectional descriptive design was used. The study included 54 athletes aged 9–11 years assessed using a standardized physical fitness test battery. Skill performance was evaluated by judges and expressed as mean scores. Pearson correlation and stepwise multiple regression analyses were applied. Results: Skill performance was associated with standing long jump (r = 0.826), standing vertical jump (r = 0.887), 20-meter sprint (r = -0.674), rapid trunk flexion (r = 0.678), kick to hold handstand (r = 0.634), rearward leg lifts (r = 0.844), rapid straight arm raises (r = 0.702), upper body lift (r = 0.301), forward trunk bend (r = -0.512), and backward arm–trunk angle (r = 0.795). The model explained 88.24% of variance, with standing vertical jump, backward arm–trunk angle, upper body lift, and sprint as key predictors. Conclusions: Within an EGF-aligned battery, Standing long jump, Arm-Trunk angle backwards, Upper body lift, Sprint 20 meters extension provide the clearest practical indicators of judged trampoline skill performance in youth athletes. These measures can support streamlined monitoring and targeted strength–power and mobility development.