A KINEMATICAL ANALYSIS OF THE TAEKWONDO APCHAGI

Abstract

The purpose of this study was to investigate the kinematical characteristics of Apchagi in Taekwondo kicking motion using the techniques of three dimensional cinematographic techniques. Four college athletes were selected as subjects. After analyzing Apchgi motion, it is concluded the followings. In performing Apchagi, the average time was 0.61 ± 0.02 seconds and the center of body moved right-left (X-axis) 3.7 ± 0.8 cm, forward-back (Y-axis) 46.1 ± 4.5 cm, up-down (Z-axis) 14.4 ± 2.4 cm. Y-axis movement showed the biggest scale among these three direction variances because it need to move the body forward to kick the target. In preparing the motion, pelvic angle showed 150.9 ± 1.05° and in kicking motion 118.5 ± 1.28°. Knee's angle was 71.0 ± 1.33° in f1exion motion. On the other hand, Ankle angle was 113.2 ± 1.73° for preparing the motion and 136.1 ± 4.16° for taking off motion. For flexion phase it increased up to 162.1 ± 5.85° and decreased to 150.9 ± 3.50° in kicking motion.