Analysis Of The Kinematic Characteristics And Their Special Ability Index Of Elite Female Discus Throwers

Women's discus is a forerunner to enter the world top level in Athletic Sports history of China. At present, Women' s discus has been listed as one of the important Athletic events that China will plan to develop to challenge Olympics.The writer checked the articles and books related with this subject since 80's discovering , the past research of people includes primarily: Analyzing the biomechanics principle and the variety of the mechanics index sign of discus throw process from the biomechanics angle ;Analyzing present condition of athletes'qualities or the influence of a certain quality to athletes'throwing distance ;About power training ;Concerning the theories analysis of the complete technique in discus or some a technical link; About technique assess ; Of all the checked books , such as Doctor ZhangYingbo's《tossing discus modern throwing technique and training》,in this book ,the writer discussed this event completely, including :How to select discus athletes and how to train, the discus technique analyze, assesses, games and harm protection etc; The past research of people 3-V photographed and analyzed athletes'technique, described the technical kinetics or dynamics characteristics of Chinese excellent athletes from many angles, but lacking in the related research of the inside special ability index and the outside technique expression. Therefore, the writer commences from this angle, adopting the cultural heritage data method, film analyzing method, questionnaire inquisition method and contrasting with analyzing method, proceeding the analysis of athletes'special ability index and the athletes'technical kinetics characteristic, drawing the following conclusions:1.Analyzing the velocity variety of the quality heart of discus drawing that: Leeyanfeng's and Xushaoyang's velocity variety characteristic of the quality heart of discus comparatively reasonable , but other athletes'velocity variety characteristic of the quality heart of discus still are not very ideal , expressing primarily: The discus speed rises and falls obviously at the revolving stage, the speed is unsteady, the speed loss in transition period is heavier .2.Analyzing six athletes'revolving technique rhythms showing: Leeyanfeng's, Xushaoyang's, Aongaimin's and Wangyu's technique time and rhythm characteristic is more reasonable: The time of taking of into non-support and transition is short, the rhythm is quick.3.Six women athletes'body center of gravity circulating track diagram comparatively reasonable , but the discus circulating track still need to be improved, the main performance is: Parts of tracks is not fluent enough, the second range is small, going forward is not enough; the main reason is: The technique of the athlete is not enough perfect, existing when revolving the first turning move forward not enough and power position doesn't link up with revolving closely enough.4.By analyzing the body center of gravity kinetics parameter of the athletes showing: The athletes'rhythm characteristic of time have difference in the whole throwing process, the speed of body center of gravity in power position descent more obvious than transition period, but discus speed in power position is increased compared to the transition period, this showing :In power position there may have taken place the momentum deliver from human body to discus.5.Analyzing the angle between shoulder and hip, the pulling angle and the variety of distance between two feet at the instant of power position, a handful of athlete's oversteps the apparatus technique and the legs'technique of power position basically reasonable characteristic. At the first step announcing the variety regulation of the pulling angle and the distance between two feet: The athlete whose throwing distance is farther his pulling angle is small in the transition period, the discus circulating distance is long, the distance between two feet is long, confirmed that excellent athlete contain big action range from the new angle.6. Analyzing the athletes'ten special character indexes drawing: legs'power of the six athletes is widespread worse; Leeyanfeng's, Xushaoyang's and Songaimin's character situation are developed better than Mashuli's, Taohongbo's and Wangyu's; Leeyanfeng's character development is more balanced of the six; Xushaoyang's breaking out power is the best of the six, but her coordinating ability of the whole body is located the reciprocal the second; Leeyanfeng's and Songaimin's coordinating ability of the whole body are the best .The unbalanced condition of the six athletes'special character may limit the further improvement of their throwing distance.7. The development level of the body character will affect the technique to develop by all means, there having the performance on the technical kinetics characteristic, among them Leeyanfeng and Xushaoyang are typical models: Leeyanfeng's character development is more balanced, her coordinating ability of the whole body is strong, so her technical time, rhythm characteristic are comparatively reasonable, the discus movement track is more fluent, the radius is bigger; The Xushaoyang's breaking out power is stronger, so her accelerating ability to the discus is stronger. Her coordinating ability of the whole body is bad, so her discus movement track is not fluent enough, and the radius is shorter.