鐵棒運動中에서 봉을 날아 넘으면서 뒤 겹공중돌아매달리기(Kovacs)의 動作分析

Analysis of the Movement Kovacs Among the Steel Bar Movements

&nbsp;&nbsp;Focused on the Kovacs movement among the steel bar movements, the movement of Berente, German male representative player, who participated in the &quot;88 Seoul Olympiad, and those of Lee Joo-Young and Han Yun-Soo, Korean male representative players, who participated in the &quot;90 Asian Games were comparatively analyzed, which brought forth following conclusions:<BR>&nbsp;&nbsp;1. Neck Angle<BR>&nbsp;&nbsp;At the 1st phase, BT player showed 215°, JH player, 195.3°, and YS player, 198°: BT player performed more perfect movement for sommersault than those by JH and YS players; at the 3rd phase, BT player showed 194°, JH player, 190°, and YS player, 203°: BT and JH players made the body angle small in order to have the volocity of sommersault more speedy.<BR>&nbsp;&nbsp;2. Trunk-Angle and Knee-Angle<BR>&nbsp;&nbsp;At the 3rd phase, BT player made smaller body angle than those by JH and YS players as 57.5° and 35°: it appeared as that for accelating the speed of sommersault.<BR>&nbsp;&nbsp;3. Shoulder Angle<BR>&nbsp;&nbsp;At the 1st phase, BT, JH and YS players showed 120°, 137.8° and 152° respectively: BT player pulled his body more upward; at the 5th phase, BT player performed a larger angle than those by JH and YS players as 202.3°: it appeared a desirable posture, that is, he took the bar more rapidly for the next continuous movements by stretching his body straightly.<BR>&nbsp;&nbsp;4. Hand deviation Angle and Hanging Angle<BR>&nbsp;&nbsp;In case of hand deviation angle, BT, JH and YS players performed 17.5°, 20° and 32° respectively: BT player started the movement of sommersault faster than other players; and, as for hanging angle, the three players showed 35.3°, 26.2° and 19.8° in the order mentioned: BT player performed a more desirable posture, that is, he grasped the bar faster than other players after the movement of sommersault so that he could took the posture of next movement easier.<BR>&nbsp;&nbsp;5. Height and Distance<BR>&nbsp;&nbsp;As for height, at the 3rd phase as that for vertical posture, showed BT player, 4.46m, JH player, 4.54m and YS player, 4.72m: YS player appeared higher position; in case of distance, total lengthes of BT, JH and YS players were 1.68m, 1.54m and l.72m respectively: also that of YS player appeared longer, that is, it is interpreted as that the slowness of his speed in sommersault made the next continuous movement difficult to play.<BR>&nbsp;&nbsp;6. Time<BR>&nbsp;&nbsp;In case of time, at the 2nd, 3rd, 4th and 5th phases, BT player took 0.6390 sec., JH player, 0.6674 sec., and YS player, 0.6816 sec.: BT player showed faster movement of sommersault; as for the total time of sommersault and spinning, the three players showed 0.8804 sec., 0.9088 sec, and 0.9372 sec. respectively.