優秀跳遠選手下肢動作對成績表現影響之研究

The Influence of Lower Limb Motion of Long Jumpers on Performance

游正忠(Cheng-Chung Yu) ； 陳建勳(Jian-Syun Chen)

《輔仁大學體育學刊》 5期 (2006/05) Pp. 185-200

https://doi.org/10.29697/JPE.200605.0016

摘要

Purpose: The purpose of this study was to analyze male and female long jumpers' approach, take-off and flight motion. Method: This study used three cameras with a speed of 60 frames per second (Sony) to record the jumpers performance in the 2005 International Track and Field Competition. According the Dempster model(1955) to record 14-segments and 21-joint points on the jumper's performance through the Kwon3D analysis software to analyze the dates.
Results and Conclusions: First, the leg stiffness of takeoff corrected significantly with the performance on female. That is to say the bigger vertical strength would promote performance. Second, the takeoff angle and vertical velocity and fan angle were reached to the significantly corrected with the result in men's player. Third, during support phase, the angle of knee and ankle was main buffer joint. Fourth, the angle of the moving leg during the support phase was bigger than that during the push-off phase, and, during the buffer phase, the angle of the moving leg correlated significantly with the performance for female(r=0.675、r=0.636, p＜.05). That is to say the fast-moving motions of the moving leg during the buffer phase would influence performance. Fifth, changes in the angle of the take-off leg and the moving leg were significantly correlated with the vertical velocity during the support phase for female (r=0.730. p＜.05), which means a bigger angle of the two legs contributed to the increase of vertical velocity. Sixth the moving degree of the moving leg achieved high-intermediate correlation with the hip-joint of the take-off leg, which indicates that the greater the moving degree is, the better the hip-stretching motion of the take-off leg is. It has positive meaning on the elevation of the take-of effect.
Suggestion: To strengthen the training of the leg swing motion will adventage to acquire vertical velocity to promote performance.

關鍵字

下肢動作 ； 腿部勁度 ； 關節勁度 ； 擺動腿

並列摘要

Purpose: The purpose of this study was to analyze male and female long jumpers' approach, take-off and flight motion. Method: This study used three cameras with a speed of 60 frames per second (Sony) to record the jumpers performance in the 2005 International Track and Field Competition. According the Dempster model(1955) to record 14-segments and 21-joint points on the jumper's performance through the Kwon3D analysis software to analyze the dates.
Results and Conclusions: First, the leg stiffness of takeoff corrected significantly with the performance on female. That is to say the bigger vertical strength would promote performance. Second, the takeoff angle and vertical velocity and fan angle were reached to the significantly corrected with the result in men's player. Third, during support phase, the angle of knee and ankle was main buffer joint. Fourth, the angle of the moving leg during the support phase was bigger than that during the push-off phase, and, during the buffer phase, the angle of the moving leg correlated significantly with the performance for female(r=0.675、r=0.636, p＜.05). That is to say the fast-moving motions of the moving leg during the buffer phase would influence performance. Fifth, changes in the angle of the take-off leg and the moving leg were significantly correlated with the vertical velocity during the support phase for female (r=0.730. p＜.05), which means a bigger angle of the two legs contributed to the increase of vertical velocity. Sixth the moving degree of the moving leg achieved high-intermediate correlation with the hip-joint of the take-off leg, which indicates that the greater the moving degree is, the better the hip-stretching motion of the take-off leg is. It has positive meaning on the elevation of the take-of effect.
Suggestion: To strengthen the training of the leg swing motion will adventage to acquire vertical velocity to promote performance.

並列關鍵字

Limb motion ； Leg stiffness ； Angular stiffness ； Free leg

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