This thesis tries to explore jumping performance among Slovenian National Volleyball League players. The study includes 142 participants from six male and eight female teams.
The purpose of the following study was to determine the level of selected aspects of strength and differences in push-off performance between the clubs in men's and women's categories, identify the relation of selected aspects of strength in terms of the clubs' success in the league championships, as well as determine the level of selected aspects of volleyball players' strength according to their playing positions. The differences in jump height and reactive strenght index (RSI) between the clubs were analyzed using one-factor analysis of variance, while two-factor analysis of variance was used in order to determine the differences between playing positions. Additionally, Tukey's HSD test was used to compare the jump height and RSI data between individual pairs of playing positions. Statistical processing was used to check the statistical characteristics of the differences and the effect of the results between the volleyball teams and playing positions.
The results show that jumping performance does not affect the final success of the team in the men's club to the same degree as it does in women's. The best push-off performance and RSI were documented in men's playing positions of outside hitter and libero, and in women's libero. The worst results of selected aspects of strength were documented in men's player positions of setter and middle blocker in men, and setter, as well as opposite in women.