Analysis Of Chen Yibing Rings To End The Power Of The Kinematic Motion Of Static Posture

Objective: To analyze the whole-set movements made by ChenYibing who is the most outstanding rings athlete in the2012Shanghai NationalChampionship rings final match and completion of action technology, and to reveal thecharacteristic and law of whole-set movement arrangement and kinematicscharacteristic of static strength movements at the end of the whole-set movements.Method: To realize the research situation and development of rings both at home andabroad through looking up related literature, to learn the knowledge of rings throughconsulting the coaches and athletes of Sichuan provincial gymnastic team andbiomechanics expert. The whole-set movements which was made by Chen Yibing in2012Shanghai National Championship rings final match was recorded by usingthree-dimensional photogrammetry. The3D-Signal TEC motion analysis system wasused to parse the action. Excel was applied for data processing. Results: The whole-setmovements arrangement divided into three categories to analyze, named as ratioanalysis, difficulty and type analysis, arrangement and connection analysis of entireactions. Nine actions except getting down movement were divided into two parts. Theconsolidation of whole-set movements were divided into four parts, named as staticstrength movements, hanging backswing movements, giant swing forward movementsand front pike somersault twice. As the giant swing forward movements and front pikesomersault twice are simple swing action, there is no comparison between them. Soonly the giant swing forward movements were chosen to analyze in this article.Conclusion:(1) The ratio of dynamic and static movements was proximately equal,which was compliance with the rules. The exceedingly difficult and comprehensivemovements were used orderly, which combined dynamic movements with staticmovements.(2) The analysis conclusions of static strength movements were as below:the mean of Chen Yinbing’s elbow angle was163.3°, knee angle was173.2°, ankleangle was161.5°, arm angle was22.7°and trunk angle was173.2°. The mean of pausetime was2.7s. As can be seen from the average of all these measured angles, ChenYibing performed better in terms of straight legs, straight body and pause time than interms of straight arms and stretched toes. There was some discrepancy in keeping armsparallel to the horizontal plane in static cross-sustaining movements.(3) Horizontal crossaction and support action totally were performed well. The first cross-sustainingmovement was performed better than the second. Rectangular cross action, handstand action and two inverted cross actions were not performed well.(4) The analysisconclusions of hanging backswing movements were as below: in all four movements,the hip angles were minimized before the body reached the vertical position. Thechanges of hip angle had little difference in front pike somersault twice into hangingmovement, front somersault directly into cross movement and hanging backswing upinto cross-sustaining movement. The hip angle was decreased firstly and then increasedbefore the body was over the below vertical plane of ring. While the body was over thebelow vertical plane of ring, the hip angle was nearly maximized and then decreasedfirstly and then increased. In general, the decreased extent of hip angle before the bodywas over the below vertical plane of ring was larger than after it.(5) The analysisconclusions of giant swing forward movements were as below: the angular speed beforethe body was over the vertical plane of ring was25.3rad/s, and then it was instantlyincreased to283.7rad/s. The shoulder angle was100.4°and the hip angle was176.3°when the body was over the vertical plane of ring, and when the body was firstlyparallel to the horizontal plane they respectively changed to140.7°、135.8°. Then theshoulder angle and hip angle were respectively increased to174.3°and173.1°when thebody was over the below vertical plane of ring. Meanwhile, the angular speed was425.2rad/s. The hip angle was minimized to137.0°when the body had a backswing to theback of ring at89.2°. The body kept straight when the body was over the up verticalplane of ring, and the hip angle was176.8°.