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Profesyonel Erkek Voleybol Oyuncularında Omuz Kas Kuvvetı̇ ve Smaç Servı̇S Hızı Arasındakı̇ İLı̇ŞKı̇Nı̇N DeğErlendı̇Rı̇Lmesı̇

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Date
2020
Author
Akay, Baran
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Abstract
Akay, B., Assesment of the Relationship Between Shoulder Muscle Strength and Jump Spin Serve Velocity in Professional Male Volleyball Players, Hacettepe University Gradute School of Health Sciences Sports Physiotherapy Program Master of Science Thesis, Ankara, 2020. The aim of this study was to determine the difference between isokinetic muscle strength of athletes using and not using the jump spin serve, to investigate the relationship between jump spin serve and shoulder strength and to determine the validity and reliability of jump spin service velocity measurement using radar to determine shoulder muscle strength. 28 volleyball players (age: 26.54 ± 5.8 years, BMI: 22.87 ± 1.6 kg/m2) aged between 18-37, who played in the Efeler League were included in the study. The shoulder internal and external rotator concentric muscle strength of all athletes was evaluated with the Isomed 2000 isokinetic device at 60°/sec and 300°/sec. Regardless of the type of service preferred by the athletes during the game, jump spin serve was requested and the speeds of the 3rd, 5th and 10th successful services were recorded. Jump spin serve velocity measurements were made with radar. The relationship between jump spin serve velocity averages and shoulder muscle strength was analyzed with the Spearman correlation test. Reliability of jump spin serve velocity measurement using radar was determined by the ICC (Intraclass correlation coefficient) method. 3, 5 and 10 jump spin serve velocity and internal rotator muscle strength had a good correlation at 60°/s (r = 0,76, 0,80, 0,79, p <0,001) and had a modarate correlatıon at 300°/s (r = 0,55, 0,58, 0,57, p = 0,002, p = 0,001, p = 0,001). It was observed that the athletes who used jump spin serve in the routine had higher internal rotator muscle strength than those who did not (p = 0,013). The test-retest reliability of the measurement of 3, 5 and 10 jump spin serve velocity was determined to be excellent (ICC = 0,93, 0,98, 0,99, p <0,001). SEM (standard error of measurement) and MDC (minimal detectable change) values of 3, 5 and 10 jump spin serve velocity measurements were calculated respectively as 2,21-6,13, 1,40-3,88 and 0,98-2,71. In this study, it was determined that jump spin serve velocity was mostly related to internal rotator muscle strength. It was thought that the presence of the internal rotator muscle strength of the athletes using the jump spin serve versus those who did not, might be related to the repetition of the jump spin serve and spike during the training and matches. This study showed that jump spin serve velocity measurement using radar can be used as a functional test in the field for upper limb in all volleyball players to determine internal rotator strength.
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http://hdl.handle.net/11655/22818
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