Direction and limb-specific associations between core muscle endurance, vertical jump performance, and multidirectional dynamic balance in female volleyball players
Makaleler > Tam Makale · 2026
Yazarlar: Mehmet Zeki ÖZKOL
Brazilian Journal of Motor Behavior (BJMB), ESCI İndekslerine Giren Dergi, Uluslararası, Emerging Sources Citation Index (ESCI), 2026, cilt 20, ss 1-7
Özet
BACKGROUND:Dynamic balance in volleyball requires effective postural control during multidirectional movements and landings. Although core muscle endurance and vertical jump performance are considered important components of athletic performance, their direction-specific associations with dynamic balance remain unclear, particularly in female volleyball players. AIM:This study investigated the direction and limb-specific relationships between core muscle endurance, vertical jump performance, and dynamic balance performance. METHODS: Fifteen female volleyball players participated in this study. Core muscle endurance was assessed using the McGill torso endurance test battery and computed as a composite Core Endurance Index. Dynamic balance was evaluated with the Star Excursion Balance Test (SEBT) in eight directions for both limbs, with a composite score calculated as the mean reach distance. Vertical jump performance was measured with squat jump and countermovement jump tests on a contact mat. Linear mixed-effects modelling was used for direction-specific SEBT reach distances, and multiple linear regression was performed for the SEBT composite score. RESULTS:The linear mixed-effects model revealed a significant main effect of reach direction on SEBT performance, but no significant main effects or interactions were found for core muscle endurance or vertical jump performance. The multiple linear regression model predicting SEBT composite score was not statistically significant (R2=.013, p=.985), with no significant predictors. In trained female volleyball players, core muscle endurance and vertical jump performance were not significant predictors of dynamic balance performance. INTERPRETATION:The results highlight the importance of direction-specific assessments and suggest neuromuscular or technical factors beyond core endurance and vertical jump performance may play a greater role.