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KMID : 1021220110020010229
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국제물리치료학회지
2011 Volume.2 No. 1 p.229 ~ p.236
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Effect of the Positions of Female Pro-Volleyball Players on the Stability of Shoulder Joints of the Dominant and Non-dominant Arms
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Kim Yong-Yeon
Shin Hee-Joon
Kim Bo-Kyung
Koo Ja-Pung
Park Joo-Hyun
Kim Nyeon-Jun
Yun Young-Dae
An Ho-Jung
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Abstract
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The purpose of this study was to comparatively analyze the active stability of shoulder joints according to the frequency of overhead motions, such as serving and spiking, engaged in by female professional volleyball athletes who play different positions, and to provide the results as the basic data for developing exercise programs to prevent shoulder joint injuries. The subjects of this study were 50 Korean female professional volleyball players and positions were as follows: left and right attackers, centers, setters, and liberos. The external rotation and internal rotation muscle strength and muscle strength ratios of the dominant and non-dominant arms of all subjects were measured using Biodex. The results of this study are as follows: Frist, no significant differences were found in the internal and external rotation muscle strength of the dominant and non-dominant arms between positions. Second, for the shoulder joint muscle strength ratio of the dominant arm, by position, the setter showed significantly greater stability compared to the other positions. Third, for the shoulder joint muscle strength ratio of the non-dominant arm, by position, no significant difference in stability between positions was found. Fourth, it was found that the dominant arm had significantly greater instability of the shoulder joint than the non-dominant arm for attackers and centers, but no significant difference was found for setters and liberos. This study comparatively analyzed the muscle strength ratios of the external/internal rotations and dominant/non-dominant arms, which can determine the stability of the shoulder joints between female professional volleyball playing positions that engage in jumps and spikes using only the dominant hand and positions that do not.
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KEYWORD
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Shoulder Joint, Dominant, Non-dominant, Isokinetic Exercise, Muscle Strength, Volleyball Player
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