速滑弯道蹬冰技术的特征比较  

Speed skating curve pedal ice technology the characteristic comparison

作　　者：张亚东[1] 

机构地区：[1]吉林省体育科学研究所,长春130022

出　　处：《中国教育与社会科学》2009年第2期120-122,共3页Chinese education and social science

摘　　要：通过建立以冰刀铰链为转动原点的下肢关节点蹬伸模型，采用3D方法，探讨了clap式冰刀技术下肢关节的蹬伸机制，结果认为：从开始蹬冰至80％阶段，踝关节以提供稳定的支撑作用为主，仅在80％阶段以后特别是从90％～100％阶段内完成动力蹬伸；由于右侧膝关节点在蹬冰过程中前倾下压动作更为突出，决定了在蹬冰过程中重心沿切线方向上前移程度在左右侧肢体之间的差异；从支点与重心之闻的位置关系上看，右单步中重心的移动方向更倾向于切向，而在左单步中重心的移动方向则更倾向于法向。As rotates the zero point through the establishment take the ice skates hinge the lower limb articulare pedal to extend the model, uses the 3D method, discussed the clap type ice skates technology lower limb joint pedal to extend the mechanism, finally thought：From will start the pedal ice to 80% stage, the malleolus joint provides the stable support function primarily, only later specially is completes the power pedal in 80 % stage from 90 %- 100% stage to extend;Because right flank the knee joint under the anteversion presses the movement in the pedal ice process to be more prominent,had decided the center of gravity goes forward in the pedal ice process along the tangent bearing to move the degree between about side body difference;Looked from the pivot and in the center of gravity position relations that, the right center of gravity travel direction favors on foot tangential, but in left on foot center of gravity travel direction then favors normal.

关 键 词：伸膝压踝 重心滑角 蹬伸半径 前倾下压 

分 类 号：G40-05[文化科学—教育学原理]