| （西安体育学院 田径教研室，陕西 西安 710068） 摘 要：对目前我国3名优秀女子铁饼运动员投掷技术进行同步研究发现，宋爱民存在腾空时间短、重心高、右脚着地早、上下肢扭紧差，最后用力阶段重心向投掷方向移动速度快、左右脚在垂直方向和前后方向的力较大、力量的向前行较好；孙太凤缓冲时间较短、右腿蹬伸充分、垂直方向和向前的力量较大；李艳凤过渡阶段上下肢扭紧好、身体后倾角度大、右脚着地对地面冲击力大、左右方向的力较大、力量在左右腿之间移动幅度大、没有转化为向前或者垂直方向的力量，向前性差，蹬伸不充分。 |
DONG Hai-jun，SU Ming-li，WANG Kun
| （Section of Track and Field，Xi’an University of Physical Education，Xi’an 710068，China） Abstract: By making a synchronous study of the throwing techniques of 3 excellent discus throwers in China, the authors revealed the following findings: SONG Ai-min showed the following technical characteristics: short leaping time, high center of gravity, early right foot landing, poor upper and lower limbs twisting; at the final power explo-sion stage: a fast speed of moving of the center of gravity towards the throwing direction, a powerful force applied by the left and right feet in the vertical, backward and forward directions, nice forward moving power; SUN Tai-feng showed the following technical characteristics: short cushion time, fully right foot stretching, a powerful force applied in the vertical and forward directions; LI Yan-feng showed the following technical characteristics: at the transition stage: nice upper and lower limbs twisting, a big body backward tilting angle, a powerful force applied by the right foot to the ground as well as in the left and right directions, a big amplitude of moving of power be-tween the left and right foot, failure to turn the power into forward or vertical power, poor forward moving, and in-sufficient stretching. |
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