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Successful Factor Analysis of 540° Dwihuryeochagi to Apply Free Style Poomsae of Taekwondo

태권도 자유 품새에 적용하기 위한 540° 뒤후려차기의 성공요인 분석

  • Yoo, Si-Hyun (Department of Physical Education, Graduate School of Korea National Sport University) ;
  • Ryu, Ji-Seon (Department of Health and Exercise Science, College of Lifetime Sport of Korea National Sport University) ;
  • Park, Sang-Kyoon (Department of Physical Education, College of Sport Science of Korea National Sport University) ;
  • Yoon, Suk-Hoon (Department of Community Sport, College of Lifetime Sport of Korea National Sport University)
  • 류시현 (한국체육대학교 대학원 체육학과) ;
  • 류지선 (한국체육대학교 생활체육대학 운동건강관리학과) ;
  • 박상균 (한국체육대학교 스포츠과학대학 체육학과) ;
  • 윤석훈 (한국체육대학교 생활체육대학 사회체육학과)
  • Received : 2013.08.19
  • Accepted : 2013.09.27
  • Published : 2013.12.31

Abstract

The purpose of this study was to provide fundamental information for success factors of techniques through kinematic analysis including coordination of lower extremities and landing stability according to the success and failure of $540^{\circ}$ Dwihuryeochagi in Taekwondo. Twenty Taekwondo athletes: ten success group (S, age: $22.3{\pm}1.8$ yrs, height: $172.1{\pm}5.4$ cm, body mass: $64.4{\pm}4.2$ kg) and ten failure group (F, age: $22.3{\pm}1.8$ yrs, height: $172.1{\pm}5.4$ cm, body mass: $64.4{\pm}4.2$ kg) participated in this study. Three-dimensional motion analysis using a system of 3 video cameras with a sampling of 60 fields/s was performed during the competition of $540^{\circ}$ Dwihuryeochagi. Motions were divided into five events: pivot foot landing (E1), pivot foot toe off (E2), COM max height (E3), kick impact (E4) and landing (E5). At E1, the stride width was greater for S than for F (p<.05) while the time was greater for S than for F during P4 (p<.05). At E4, knee angle was greater for S than for F (p<.05). At E5, hip angle was greater for S than for F (p<.05) while kick distance was greater for S than for F (p<.05). Furthermore, at P3, the time would be related to kicking velocity (p<.05), while at P4, the time, range of hip angle and knee angle would be related to kick distance (p<.05). At P1, COM horizontal velocity would be related to COM vertical velocity of P1 and P2 (p<.05). Based on the findings, success factors of $540^{\circ}\acute{y}$ Dwihuryeochagi were COM horizontal velocity of P1, COM vertical velocity of P2, the time, kick distance, velocity, angle of lower extremities and coordination of P3-P4.

Keywords

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