Kinematic Analysis On The Technique Of Into The Corner Of The 500m- Male Speed Skaters In China

The paper adopts the methods of imaging photography and analysis to get the kinematics parameter data of Into The Corner of the male-excellent atheletes of speed skater in China, and applies the methods of Biomechanics to study and analyze the changes of Focus and Angle ect., to define the characteristics of technology of Tnto The Corner, to provide the theoretical foundation for the evaluation of technology and the training of practice skill.In the process of Into The Corner, the reasonable of technical motion of the skating leg take the initiative tread,will decide the speed of sliding;each stage in the left-step have less time than the right-step, and the left-double reduced significantly relative to the left-single;the large ratio of the time of the left-single and the left-double relative to the right-single;the average speed of each stage increasing by time,the average speed of the single phase have less than double phase.The changes of focus at the X axis, the displacement of left-single is the maximum,the speed of the left-double is the fastest,the right-single have the longest time;at the Y axis, the speed of maximum and minimum were at the time of start and end;at the Z axis, the maximum positive-speed is in the left-single,and the maximum negative-speed is in the right-single,the value were 0.74m/s and 0.19m/s.The order of exertion in the different stage of the lower limb is different,the upper limb have the same in the left-single; the maximum angle of the left-ankle and the left-hip are large than the right ,but the minimum knee angle is small; the maximum and minimum angle of the right upper limb are large than the left; from 0.36s to 0.58s,the angle of right lower limb have a large change,at the other time,the curve of ankle angle fluctuations around the axis of 80°.