The purpose of this study was to analyze the kinetical variables of the lower extremity joints when performing uchimata(inner thigh reaping throw) by uke(receiver)'s two posture(shizenhon tai), jigohon tai), by voluntary resistance level(VRL) in judo. The subjects, who were for 3 male Korean nationa...
The purpose of this study was to analyze the kinetical variables of the lower extremity joints when performing uchimata(inner thigh reaping throw) by uke(receiver)'s two posture(shizenhon tai), jigohon tai), by voluntary resistance level(VRL) in judo. The subjects, who were for 3 male Korean national representative judokas(elite group : EG) and 3 male representative judokas of Korean University(non-elite group: NEG), and were filmed 4 DV video cameras(60fields/sec.), that posture of uke were shizenhon-tai (straight natural posture), jigohon-tai(straight defensive posture), VRL of uke was 0%. The selected trials were subject to 3-dimensional film motion analysis and ground reaction force(MRF) analysis. The kinetical variable of this study were temporal, postures( ankle and knee angle of attacking leg), that were computed through video film analysis, MRF at events were obtained from the ground-reaction force analysis by AMTI force plate system. When performing uchi-mata according to each posture and by VRL, from the data analysis and discussion, the conclusions were as follows : 1) Temporal variables : total time-required(TR) when performing uchi-mata was shown EG 0.13sec the shorter than NEG(o.77sec.) in shizenhon-tai. and EG 0.17sec the shorter than NEG(o.76sec.) in jigonhon-tai. Also, all of two groups' jigohon-tai(0.68sec.) were faster than shizenhon-tai(0.71 sec.). 2) The posture variables : The angle of ankle in attacking when performing were plantar flexion in EG, and dorsi flexion in NEG by shizenhon-tai and jigohon-tai posture. The angle of knee in attacking when performing were extension in EG and NEG, but range of extension in EG were larger than in NEG. 3) MRF : Vertical MRF when performing uchi-mata was shown the strongest in the 2nd stage of kake phase(2.23BW) by EG in both posture, and it was same value by NEG(2.23BW), but shizenhon-tai (2.28BW), jigohon-tai(1.64BW), respectively.
The purpose of this study was to analyze the kinetical variables of the lower extremity joints when performing uchimata(inner thigh reaping throw) by uke(receiver)'s two posture(shizenhon tai), jigohon tai), by voluntary resistance level(VRL) in judo. The subjects, who were for 3 male Korean national representative judokas(elite group : EG) and 3 male representative judokas of Korean University(non-elite group: NEG), and were filmed 4 DV video cameras(60fields/sec.), that posture of uke were shizenhon-tai (straight natural posture), jigohon-tai(straight defensive posture), VRL of uke was 0%. The selected trials were subject to 3-dimensional film motion analysis and ground reaction force(MRF) analysis. The kinetical variable of this study were temporal, postures( ankle and knee angle of attacking leg), that were computed through video film analysis, MRF at events were obtained from the ground-reaction force analysis by AMTI force plate system. When performing uchi-mata according to each posture and by VRL, from the data analysis and discussion, the conclusions were as follows : 1) Temporal variables : total time-required(TR) when performing uchi-mata was shown EG 0.13sec the shorter than NEG(o.77sec.) in shizenhon-tai. and EG 0.17sec the shorter than NEG(o.76sec.) in jigonhon-tai. Also, all of two groups' jigohon-tai(0.68sec.) were faster than shizenhon-tai(0.71 sec.). 2) The posture variables : The angle of ankle in attacking when performing were plantar flexion in EG, and dorsi flexion in NEG by shizenhon-tai and jigohon-tai posture. The angle of knee in attacking when performing were extension in EG and NEG, but range of extension in EG were larger than in NEG. 3) MRF : Vertical MRF when performing uchi-mata was shown the strongest in the 2nd stage of kake phase(2.23BW) by EG in both posture, and it was same value by NEG(2.23BW), but shizenhon-tai (2.28BW), jigohon-tai(1.64BW), respectively.
Asami T. (1978). Kinesiological Analysis of the 'Shizentai(Natural Posture)'. Bulletin of the Associa- tion for the Scientific Studies Judo Kodokan Report (5).
David D. A. Winter, (1990). Biomechanics and motor control of human movement. second edition. Wiley-Interscience Publication, John Wiley & Sons, Inc.
Harter, R.A., & Bates, B.T.(1984). Kinematic and Temporal Characteristics of selected Judo Hip Throws. Biomechanics in Sports III. pp. 141-150.
Kawamura, T., Asami, T., Takeuchi, Y., Nakamura, R., Shibayama, H., Tanka, H., Yanagisawa, H., Komata, K., & Nose, S. (1984a). "The Analysis of Basic Posture in judo", Bulletin of the Association of the Scientific Studies Judo Kodokan Teport 6. pp.93-98.
Kawamura, T., Asami, T., Takeuchi, Y., Nakamura, R., Shibayama, H., Tanka, H., Yanagisawa, H., Komata, K., & Nose, S. (1984b). The Characteristics of the judo players' standing posture. Bulletin of the Association for the Scientific Studies Judo Kodokan Report (6). pp.99-106. Tokyo : Kodokan.
Kwon, Y. H. (2001). KWON3D Motion Analysis Ver 3.1 Seoul: Visol Corp.
Mann,R,V., & Pragure,P.G. A kinetic analysis of the Ground leg during sprint running. Research Quartly for Exercise and Sport 51.
Nowolsky, M., (1988). On The Biomechanical Evaluation of Throwing Technique in judo. Theorie und Praxis Lelstungssport(Leipzing). 26. Beih., 55-71.
Oswald, R., (1987). Technique Training and Evaluation in judo. Theorie und Praxis Lelstungssport (Leipzing). 25. 10: 60-68.
Takahashi, R., (1992). The Application of Biomechanics To Judo Technique "Okuri-Ashi-Barahai"(Sweeping Ankle Throw). Sports Coach, 15, 4, Oct/Dec: 30-33.
Zatsiorsky, V. M., Seluyanov, V. N. and Chugunova, L. (1990). In vivo body segment inertial parameters determination using a gammer-scanner method. Bio- mechanics of human
AI-Helper
※ AI-Helper는 부적절한 답변을 할 수 있습니다.