Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Analysis of ground reaction force contributing to horizontal velocity factors in short distance 100M race

육상 단거리 100m 수평속도 요인에 기여하는 지면반력분석

  • Choi, Su-Nam (Department of Physical Education, College of Education Chungnam National University)
  • Received : 2013.11.19
  • Accepted : 2014.04.10
  • Published : 2014.04.30
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Abstract

This study was to analyze ground reaction force according to Crouching Start type at the starting point of 100M race. The subjects of this study were 8 women sprinters and we analyzed their ground reaction force by classifying the distance between start blocks as three types. The followings are the results of the study. According to maximum horizontal ground reaction force analysis result, in the left foot placed in front, BS among excellent group and MS in non-excellent group showed the biggest reaction force value. In the right foot placed at the back, MS in both groups showed the biggest reaction force value. MS in the right foot of the excellent group was the biggest (0.83 BW). According to maximum vertical ground reaction force analysis result, in the left foot placed in front, ES among excellent group and BS in non-excellent group showed the biggest reaction force value. In the right foot placed at the back, BS among excellent group and MS in non-excellent group showed the biggest reaction force value.

본 연구는 육상 100m 수평속도 요인에 기여하는 지면반력분석을 하기 위하여 여자 단거리 선수 8명을 대상으로 스타트 블록간의 거리를 세 가지(Bunch Start, Medium Start, Elongated Start)유형으로 8주간 출발에 관여하는 운동역학적 요인을 분석하였다. 최대 수평 지면반력은 단거리 경기 진행방향에 대한 추진력으로 전이되는 요인으로서 기록단축에 중요한 수치라고 볼 수 있다. 분석 결과는 앞쪽에 위치한 왼발에서는 우수그룹은 BS, 비우수그룹은 MS가 지면반발력 힘값이 가장 크게, 뒤쪽에 위치한 오른발에서는 우수, 비우수그룹 모두 MS에서 지면반발력 힘값이 가장 큰 결과를 보였다. 뒷발에 위치한 오른발은 우수그룹의 MS(0.83 BW)에서는 BS에서 추진력으로 전이될 때, 가장 유리한 출발 유형이라고 할 수 있다. 최대 수직 지면반력의 분석 결과는 앞쪽에 위치한 왼발에서는 우수그룹은 ES, 비우수그룹은 BS가 지면반발력 힘값이 가장 크게 나타났고, 뒷쪽에 위치한 오른발에서는 우수그룹은 BS, 비우수그룹은 MS에서 반발력 힘값이 가장 크게 나타났다. 지면 반발력이 크게 되면 초기 수평속도를 빠르게 얻을 수 있을 것으로 사료되며, 결국에는 전방 추진력을 크게 하는 자세나 방법을 찾게 되면 초기 기록의 향상을 가져올 수 있어 기록단축을 할 수 있다.

Keywords

References

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