Ayşegül Yapıcı


The purpose of this study was to investigate the relationship between the isokinetic quadriceps and hamstring strength and, sprinting ability, agility and vertical jump performance in male volleyball players. Twenty professional male volleyball players (average age 24.5±1.1 years; mean body height 186.5±5.02 cm; mean body mass 75.34±8.39 kg) participated in this study voluntarily. For each player, isokinetic concentric muscle strength tests were performed at 60°/s and 300°/s, jump performance was evaluated by countermovement jump (CMJ) and squat jump (SJ) tests, sprint ability was determined by single sprint performance (10-30 m), and agility performance was measured using the T drill agility test. There were statistically significant correlation between peak torque of extensor and flexor muscles strength at 60°/s, 300°/s contraction velocities and squat jump, countermovement jump (p<0.01). There was no significant correlation between isokinetic knee strength and T drill test and sprint tests (10-30 m) (p>0.05). Moreover, statistically significant relations were found between the performances of athletes in different field tests (p<0.05). This study has shown that isokinetic peak torque of quadriceps and hamstring are significant predictor for field based anaerobic tests, SJ and CMJ, that are similar to the actions made in the game for volleyball players.


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isokinetic strength, vertical jump, anaerobic, volleyball


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DOI: http://dx.doi.org/10.46827/ejpe.v0i0.393


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