速度滑冰蹬伸技术与重心移动方式之间的关系

The Relationship between Speed Skating Leg Stretching Techniques and the Focus of Movement

通过运动生物力学的方法,对优秀速滑运动员的弯道蹬伸技术与重心移动方式之间的关系进行了分析.结果认为:在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.从重心相对于蹬冰腿踝关节的移动状况来看,重心沿切向的位移幅度明显大于法向,决非传统认识中的法向移动幅度大于切向的认识.正是由于左右腿蹬伸方式上的不同,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.

To analyse the relationship between speed skating stretching turning technology and focus of movement from excellent athletes based on the sports biomechanics. The result shows that single-step on the right in the center of gravity is more inclined to cut in the direction of the movement, and in the single-step on the left in the center of gravity is more inclined to reverse in the direction of movement ~ From the conditions of the center of gravity related to the skating leg ankle movement,it cut along the center of gravity to the displacement rate than normal. Because of the different ways of leg kicking and stretching on both left and right,there has some difference on skating in the process of tangential directions along the center of gravity forward on the extent.