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태권도 뒤차기 동작의 운동학 및 동작 유사성에 관한 연구
김승곤,오선홍 濟州大學敎 體育科學硏究所 1996 체육과학연구 Vol.2 No.-
To attempt understanding of similarity of Diechagi movement in TaeKwonDo's movement with Cheju-do's representive athletes(N=5), the present study undertaken to investigate several factor influencing to similarity & accuracy when repeating it. The analysis method adapted the angle-angle diagram encoded chain in function of time. The conclusions obtained were as follows: 1. The difference of the elapsed time during Diechagi movement according to signal or non-signal didn't show significance statistically and increasing regression trend of mean cumulated elapsed time Y=O.l2X + 0.06, R^2=0.7973 in case of signal and Y=O.O83X + 0.155, R^2=0.743 in case of non-signal. 2. The first , vertical angular displacement of trunk during response- impact showed rather high increasing trend in signal than non-signal. Y=14.75X + 80.25. R^2=0.9648 in signal and Y=l7.504X + 66.814. R^2= 0.9696 in non-signal. and second, vertical & horizontal displacement of COG by each phase didn't show statistically significant difference by signal or non-signal.. each showed mean 9.64^+_4.10cm in vertical and mean 32.01±5.60cm in horizontal displacement in signal, and showed mean 10.35±3.51cm in vertical. mean 43.06±8.14cm in horizontal displacement in kinematic variables. 3. The similarity coefficient by each trial of chagi movement didn't show irregular pattern and as a characteristics. proximal endpoint in degree of similarity showed higher than distal endpoint of segments, and showed total mean 56.25% similarity this study's subjects in each 53.22% of KTH. 60.75% of SEC. 78.02% of KHJ, 43.19% of JMJ