Evaluation of Explosiveness of Strength and Power among College Volleyball Players in Ondo, Nigeria
Keywords:
Volleyball Players, Leg Strength, Leg Power, Bodyweight Squats, Standing Long-JumpAbstract
The coaches’ contribution to the effectiveness of a team’s performance is highly influential and players must be well equipped to execute a variety of skills during play. This study, therefore, evaluated the explosiveness of leg strength and leg power of volleyball players at preseason and post season training. Principle of Specificity provided the framework for this study. Thirty college volleyball players (15 males and 15 females) participated in the study. Each player performed on the court season training specifically with squat and vertical jump test. Pretest and posttest measurement were taken. Paired groups type of t-test was used to analyse the data. There was significant difference in the players’ scores for leg strength (LS) (x̅ = 24.80±4.83), conditions (t = -21.78; df=29; p<.05). There was a significant difference in the scores for leg power (LP) (t=-27.38; df=29; p <.05). The results indicated that there were significant differences in LS between males and females (t = 3.557; df = 28; p < .05). The results also indicated that there were significant differences in LP between males and females (t= 8.311; df = 28; p < .05). It was revealed that the training improved their leg strength and leg power. Therefore, coaches should engage volleyball players with exercise drills that would develop the lower body strength and power because they need explosiveness to be more effective to get off the floor quickly and reaching up above the net.
Résumé : La contribution des entraîneurs à l’efficacité de la performance d’une équipe est très influente et les joueurs doivent être bien équipés pour exécuter diverses habiletés pendant le jeu. Cette étude a donc évalué l'explosivité de la force des jambes et de la puissance des jambes des joueurs de volleyball lors des entraînements présaison et post-saison. Le principe de spécificité a fourni le cadre de cette étude. Trente joueurs universitaires de volleyball (15 hommes et 15 femmes) ont participé à l'étude. Chaque joueur s'est entraîné sur la saison du court spécifiquement avec un test de squat et de saut vertical. Des mesures prétest et post-test ont été prises. Un test t de type groupes appariés a été utilisé pour analyser les données. Il y avait une différence significative dans les scores des joueurs pour la force des jambes (x̅ = 24,80 ± 4,83), les conditions (t = -21,78; df = 29; p <0,05). Il y avait une différence significative dans les scores pour la puissance des jambes (t = -27,38; df = 29; p <0,05). Les résultats ont indiqué qu'il y avait des différences significatives de la force des jambes entre les hommes et les femmes (t = 3,557; df = 28; p <0,05). Les résultats ont également indiqué qu'il y avait des différences significatives de puissance des jambes entre les hommes et les femmes (t = 8,311; df = 28; p <0,05). Il a été révélé que l'entraînement améliorait la force de leurs jambes et leur puissance. Par conséquent, les entraîneurs devraient occuper les joueurs de volleyball avec des exercices d'exercices qui développeraient la force et la puissance du bas du corps, car ils ont besoin d'explosivité pour être plus efficaces pour descendre rapidement du sol et atteindre le dessus du filet.
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