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Kinematic Variables Comparison of Setter Toss Motion on Volleyball According to Toss Types

배구경기 세터 토스 동작의 운동학적 비교분석

  • Chung, Nam-Ju (Department of Sport and Leisure, College of Health Science, Honam University) ;
  • Kim, Jae-Pil (Department of Sport and Leisure Science, College of Humanities and Arts, Sunchon National University)
  • 정남주 (호남대학교 보건과학대학 스포츠레저학과) ;
  • 김재필 (순천대학교 인문예술대학 사회체육학과)
  • Received : 2015.01.30
  • Accepted : 2015.03.16
  • Published : 2015.03.31

Abstract

Purpose : The purpose of this study was to analyze setter toss motion kinematically according to toss types. Method : Dependent variables were elapsed time, vertical displacement of the body center, the projected speed of the ball, and differences of the joint angle to the target for four setters positioning. Result : There was no significant difference in the time but the ball contact time was shorter when the toss distance of P3 was longer. There was significant difference in the vertical displacement of COM (p<.05). The vertical displacement of COM showed that the vertical movement gradually decreased when the quick distance was longer. The vertical displacement of COM was difference (p<.05), also there was difference of the ball speed (p<.001) at the Release point(E4). There was significant difference in the knee joint angle at a certain moment among the Release(E4) and Landing point(E5)(p<.05). The hip joint was significant difference among the Apex(E2), Ball Touch(E3), Release(E4), and the Landing point(E5) on the surface(E2, E3, E4 p<.05; E5 p<.005). The shoulder angle was significant difference among the Ball Touch(E3), Release(E4) and the Landing point(E5) on the surface(E3, E4 p<.05; E5 p<.001). The elbow was significant difference in the Apex(E2) (p<.05). The wrist was significant difference in the Release(E4) (p<.05). Conclusion : If we find the clue to expect the direction of the setter's ball, we have to fine the clues in the Apex(E2) that hip join and elbow, Ball Touch(E3) that hip joint and shoulder joint, Release(E4) that wrist, elbow, hip joint, and knee joint.

Keywords

References

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