“伸膝压踝”技术在弯道蹬冰中的作用研究  

Research on Function of "Extending Knees and Pressing Ankles" on Pedaling Ice on Curve Running

作　　者：王学臣[1] 李贵阳[2] 邹晓峰[2] 

机构地区：[1]吉林农业大学体育教研部,吉林长春130118 [2]吉林大学体育学院,吉林长春130013

出　　处：《北京体育大学学报》2005年第7期931-933,共3页Journal of Beijing Sport University

基　　金：国家体育总局课题(编号:03037)

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,揭示了下肢关节在蹬冰过程中伸膝压踝技术的作用。结果认为:踝关节从开始至80%阶段是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;就膝关节点而言,右侧肢体前倾下压动作更为突出,正是由于左右腿伸膝压踝作用方式上的不同,决定了在蹬冰过程中重心沿切线方向上前移程度间的差异;下肢关节的发力顺序是髋、膝、踝,蹬伸的有效范围依次为55°～98°、98°～143°、72°～100°。Based on establishing the lower limbs pedaling and extending models taking the ice skates hinge as the zero point, this study explores the fimction of “extending knees and pressing ankles” in the process of pedaling on the ice of the lower-limb joints. The results show that from the starting period to the 80 percentage of the whole procedure, the function of the malleolus joint is to provide the stabilized support. In the last 20 percentage of the whole procedure the malleolus joints mainly finished dynamical extending and pressing action; the order of starting strength is the hip, knee, ankle, and the range of validity which the pedal extends is 55° - 98°, 98° - 143°, 72° - 100° in turn.

关 键 词：速度滑冰 伸膝压踝 弯道 前倾下压 

分 类 号：G862[文化科学—体育训练]