Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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The Process of the Kinematic Coordination and Control of Dollyochagi Motion in Taekwondo

태권도 돌려차기 동작의 운동학적 협응 및 제어과정

  • Published : 2008.06.30
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Abstract

The purpose of this study was to investigate kinematic coordination and control of lower segments in skill process. For the investigation, we examined the difference of resultant linear velocity of segments and angle vs angle graph. Novice subjects were 9 male middle school students who has never been experienced a taekwondo and expert subjects were 7 university taekwondo players. We analyzed kinematic variables of Dollyochagi motion through videographical analysis and the conclusion were as follows. 1. Examining the graph of novice subjects' maximal resultant linear velocity of the thigh, shank, and foot segment, as it gets closer to the end of the training, the maximal resultant linear velocity in each segment increased. Statistical analysis showed the following results; thigh segment caused the increase of speed, using the trunk segment's momentum in the latter term of learning, while the shank segment utilized the momentum of the adjacent proximal segment at the beginning of learning, and the foot segment in the middle of learning. 2. Until the point where the knee joint angle is minimum, as the novice group learn the skill, the flexion of knee and hip joints has changed into the form of coordination pattern in phase. On the other hand, the expert group showed continual coordination pattern in phase that the movement sequences were smooth. From the knee joint maximal flexion to impact timing, all novice and expert groups showed coordination pattern out of phase. 3. From the knee joint maximal flexion to impact timing, the ankle joint was fixed and the knee joint was extended to all the novice stages and expert subjects.

본 연구는 남자 중학교 초보피험자들을 대상으로 태권도 돌려차기 동작의 숙련정도에 따른 운동학적 협응과 제어과정을 살펴보는 데 목적을 두었다. 이용된 변인은 최대합성직선속도와 각도 대 각도 도면이었다. 분석결과, 연습후기로 갈수록 인접한 분절간의 운동량 전이가 잘 이루어져 각 분절의 최대합성직선속도가 증가하였으며 무릎관절 최대굴곡 시까지는 엉덩관절과 무릎관절이 동형동조 협응형태로 변해갔으며, 최대굴곡 후 타격 시까지는 모든 숙련 단계에 있어서 이형동조 협응패턴을 나타내었다. 발목관절은 무릎관절 최대굴곡 시까지 배측굴곡 상태에서 저측굴곡으로 변했으며, 최대굴곡 후 타격시점까지는 발목관절은 고정시키고, 무릎관절은 신전시키는 자유도 고정 제어기전을 나타내었다.

Keywords

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