A comparitive study on selected kinematic variables of jump serve of national level male volleyball players

The purpose of the study was to find out the difference in selected kinematic variables of jump serve among Senior, Youth and Junior national level male volleyball players. The sample size consisted of a total of 31 male subjects were selected randomly from the players who have represented Kerala state at the national-level competitions. The groups again sub divided into Male Senior (N=11), Male Youth (N =10), and Male Junior (N= 10). For Jump serve the variables considered Approach Distance, Approach Velocity, Distance of Jump, Height of CG and Velocity of the Serve. The serve trials of the subjects were captured with camera and analysed with Kinovea Motion analysis software. The data pertaining to the variables of jump serve were tested using Descriptive statistics, and Multivariate Analyses of Variance (MANOVA). Further ANOVA and LSD Post hoc Test was also done to find out the mean difference among the said variables of the three groups of male national level volleyball players. The level of significance was set at.05 for testing the hypotheses. The analysis of the variables of Jump Serve among Senior, Youth and Junior national level male volleyball players revealed that there was significant difference exists in terms of Approach Distance, Distance of Jump, Height of CG and Velocity of Serve. Among national level male volleyball players Senior group have the highest mean score for velocity of Jump Serve (23.520 m/s) that that of Youth (20.024 m/s) and Junior (15.801 m/s).