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http://dx.doi.org/10.5103/KJSB.2013.23.2.131

A Comparative Study on the Kinetic Factors in Taekkyon Naejirgi with and without Knee Bending of Supporting Leg  

Oh, Seong-Geun (The art managements Institute, Sangmyung University)
Ahn, Yong-Kil (Department of Judo, Yong-in University)
Publication Information
Korean Journal of Applied Biomechanics / v.23, no.2, 2013 , pp. 131-139 More about this Journal
Abstract
Naejirgi is one of the fastest, most forceful and most often being used kicks in Taekkyon games, The purpose of this study was to investigate kinetic factors on two types of Naejirgi kick, one of which uses knee bending of supporting leg and the other uses little it. 12 taekkyoners (11 males and one female) who are the students of Y University participated in this study. They have been practicing on Taekkyon for five years or more. Positions of CoM, the elapsed time of each phase, vertical ground reaction forces, joint moments and impulses of supporting leg were analyzed for this study. The results were as follows; in Naejirgi with knee bending of supporting leg than without knee bending of supporting leg, the vertical motion range of whole body CoM was larger during phase 2 and 3, the elapsed time of phase 4 were longer, players stayed longer in the nearest location to opponent, during phase 4 the vertical ground reaction forces of supporting foot were larger, and joint extension moments and angular impulses of supporting leg (especially knee) were larger. In conclusion supporting knee bending is not a useful strategy for Naejirgi, because players stay longer in the nearest position to opponent and consumed more muscle force and energy for producing the vertical momentum which is unnecessary for pushing down the opponent.
Keywords
Taekkyon; Naejirgi; GRF; Joint moment; Impulse;
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Times Cited By KSCI : 1  (Citation Analysis)
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