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The Kinematic Analysis of Gliding Type and Delivery Phase in Each Trails during Shot-Putting - Focusing on Lee, Hyung-Keun, Player in Men's High School Youth Group -

고등부 남자 포환던지기 선수의 시기 별 글라이드 유형과 딜리버리 국면의 운동학적 분석 - 고등부 이형근 선수를 중심으로 -

  • Kim, Tae-Sam (Sports Science Institute, Korea National Sport University) ;
  • Ryu, Ji-Seon (Sport & Health Management Major, School of Sport Health & Welfare, Korea National Sport University)
  • 김태삼 (한국체육대학교 체육과학연구소) ;
  • 류지선 (한국체육대학교 스포츠건강복지학부 스포츠건강관리)
  • Received : 2012.03.20
  • Accepted : 2012.05.16
  • Published : 2012.06.30

Abstract

The purpose of this study was to provide information about kinematic variables of the gliding and delivery motion of Hyung-Keun Lee, a high school shot putter who was ranked 1st at the 2011 National Sports Festivals. Three-Dimensional motion analysis using a system of 4 video cameras at a sampling frequency of 60 Hz was conducted during shot-putting events at the 2011 National Sports Festivals. During the gliding and delivery phase of the player the results showed following characteristics; 1) The gliding technique types of the player appeared to be the short-long technique as the gliding and stance length ratio were $42.3{\pm}3.87$ % and $57.7{\pm}3.87$ %, respectively. In addition, the trajectory of shots during the gliding and delivery phase showed different trajectory patterns with "S-shaped" type of elite players due to the deviation from a central axis of the APSS (athletic-plus shot system). 2) The horizontal velocity of COG made from gliding should maintain the velocity during transition and release phase, but the player showed a small momentum for a gradual decrease of velocity. 3) Therefore, the player requires to adjust an appropriate ratio between gliding and stance length with a strong muscle power at the trunk, throwing arm, and the lower extremity during gliding and delivery phase.

Keywords

References

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