earticle

영어

The purpose of this study was to analyze technical variations of the Asia elite women triple jumpers. The subjects included 8 jumpers who placed in the final at the 16th Asian Track and Field Championship held in Incheon. Four JVC video cameras were used to record the competition at the 30frames/s frame rate, 60 Hz sampling frequency. Data were digitized and smoothed by using the Kwon3D 3.1 program. The conclusions are as follow : First, jumpers within the 23-26% rate of height to last stride during the Approach run showed good results. Second, five jumpers used a hop dominated technique, and three jumpers used a balance technique. Also, range of steps was lower than world class athletes' such that the range must be increased to 30% during competition. Third, reduction of horizontal velocity was lowest for step compared to hop and jump such that the vertical velocity and flight length must be increased for step. Fourth, Asia elite women triple jumpers need to increase their vertical velocity by 0.30m/s, 0.20m/s in order to approach level of world class triple jumpers, as well as increase their take off angle during the hop, step, jump in order to improve performance. Fifth, the CM of the athletes showed a high-medium- high pattern, and this CM must be kept consistent at the take-off. Sixth, upper body was tilted toward the take-off leg during the jump, and except for PAR, KIM and YOS, athletes' upper body was tilted forward 9-18° at the take-off. High angle of coxalarticulation makes low angle at take-off, and low angle makes higher take-off angle by the leading free leg. The knee angle showed steadly up after landing at hop, but it showed down at step and jump. In order to improve their level to world-wide class athletes, Asia elite women triple jumpers need to increase their horizontal velocity of CM at touch down and take off phase.