Abstract
The purpose of this study was to qualitatively analyze coordination pattern of joints and segments during Dwihuryeochagi and present points of difference as compared with the previous studies on Dolryeochagi and Dwichagi in Taekwondo. By the utilization of three-dimensional cinematography, the angles of individual joint and segment of six male Taekwondo experts during Dwihuryeochagi were calculated. The used coordination variables were angle vs. angle plots and angle vs. angular velocity plots. It was observed during Dwihuryeochagi that in-phase coordination including a turning point synchronization and spring-like rotational control mechanism of the lower and upper trunk were transferred into both ballastic and spring-like control mechanism of the lower leg by utilizing the intervention of the fixation of degree-of-freedom, out of phase coordination and decoupled coordination of the lower trunk and the hip joint. This comparative study that used coordination variables seems to be more useful research direction to deeply understand basic control mechanisms of Taekwondo kicking techniques and to propose effective and efficient graded learning sequences among them.
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