Three-dimensional Kinematics Analysis Of The Final Exertion Technique Of Some Outstanding Female Shot Putters In My Country

This paper USES literature,3 d video analysis,mathematical statistics,comparative analysis and other research methods,with three sets of 3 d high-speed cameras in 2016 "prairie cup" national test events in track and field championships and national games women's shot put competition filming live,with six grades better athletes the best dropped last technology as the research object.For the last transition stage,the last stage,the shot put to instantaneous three parts for athletes speed,Angle of each section of the body,the center of gravity of displacement distance and the Angle of the shot put,speed,height,such as in-depth three-dimensional kinematics analysis,for athletes at the end of the force of technical analysis,find out the problems and defects in this phase athletes,training for the coaches and athletes to results provide some reference.Results show that: 1.In the transitional phase used in GongLijiao Liu Xiangrong transition for a long time,support the leg strength is weak,can not fully use the slide stage has the energy of the body,in this phase the athlete has looked ahead,high service,and the upper torso the phenomenon of the rotation of the amplitude is too large,the body into a full bow effect is poorer.GongLijiao moment of landing in his right foot,left foot not actively press down into state support.The left foot to the ground when the left leg support as well as the braking effect is not ideal,right leg,right leg stretching is not strong enough.Excessive body centre of gravity is moving forward,not form a the best preparation for the last status,and one of the better position beyond the instrument.2.The last stage of the reasonable time,GengShuang,dong yoko,RongJun at this stage of the upper hold out a bosom,and before doing enough,not fully utilize the advantage of your body to increase the vertical displacement distance of shot put at this stage.Right leg support and stretching ability as well as within the positive right knee buckle turn the push of the throwing direction ability is insufficient,besides GengShuang five athletes right hip rotation strength and explosive force is insufficient.GengShuang and RongJun worse for the accelerationof the shot put,GongLijiao in his right foot ankle joint muscle strength and stretch of elasticity is relatively weak.GongLijiao and ground RongJun knee extension ability is insufficient,left hip hip now widespread and very serious.3.In the whole force of technology to the continuity of the action,integrity,we still have some room to improve,not form a ideal state which is one with the ball.Athletes to speed needs to be improved in our country,to highly ideal,among them "bian card,Liu Xiangrong and GengShuang three athletes in the case of a height advantage,hope to be able to further improve the height.Hope that through this article research,part for improving our country outstanding female shot-putter force of technology to provide the reference and advice.