A Study On The Running Characteristics Of Elite Women Hammer Throwers In China

On the basis of previous studies by scholars and experts,this paper selected 6 excellent women hammer throwers in China,and analyzed the hammer throw from three aspects of time,speed and trajectory by using MATLAB drawing and calculation function,kinematics knowledge and statistical knowledge.This article USES the MATLAB software analysis instruments of our country outstanding female athletes trajectory characteristic parameters,aims at exploring a new sports combined with computer software analysis method,through the woman the hammer throw to the dynamic change scientifically analysis and study on the women's hammer throw for the future of the training methods and training plan to provide the correct basis,further perfecting for the hammer throw athletes throwing technology,and help improve performance.Six excellent Chinese women hammer throwers were selected as research objects in this study,including zhang wenxiu,wang zheng,liu tingting,luo na,yan ni and li yumao.Firstly,two ex-fh25 casio high-speed cameras were selected in the matches of each athlete,and each throw in the competition of the research object was photographed in fixed focus three-dimensional.Then,the APAS motion analysis system is used to screen,clip,dot,smooth and analyze the game camera,and the data needed by this research is obtained and selected.Finally,the R2015 b version of MATLAB software was used for data calculation,drawing,statistics and analysis.Through the data analysis,the following results are obtained:(1)from the perspective of rhythm: in the process of rotation,6 excellent women hammer throwers in China generally have the phenomenon of unreasonable overall acceleration rhythm,and the single supporting time is longer than the double supporting time.(2)from the perspective of speed: the overall running speed of the equipment of 6 excellent Chinese women hammer throwers in the rotation process is increased;Some elite women hammer throwers in China have obvious speed increase in the stage of double support and obvious speed loss in the stage of single support,among which rona,yanni and li yumao have unreasonable phenomena of acceleration in the stage of single support and speed reduction in the stage of double support.It is common that the increment of the first lap velocity is too large.The maximum and minimum speed increases with the number of turns,but the total speed loss of the apparatus is larger.(3)from the perspective of track: the length of single support track is longer than that of double support track for 6 excellent Chinese women hammer throwers;Discrete points of trajectory data represent acceleration,while data dense points represent deceleration,which conforms to the curve of velocity change in the paper.It is common that the inclined plane Angle is too large and the center of gravity is too high.The increment of center of gravity height has no significant rule.Through the analysis of the data,the following conclusions are drawn:(1)from the perspective of rhythm:the single supporting time is longer than the double supporting time in the rotation process of 6 excellent women hammer throwers in China.(2)from the perspective of speed: 6 excellent Chinese women hammer throwers have obvious speed loss at the double support stage;The speed increment on the first lap is too large.(3)from the perspective of the track: the track slope Angle of 6 elite women hammer throwers in China is too large,and the body center of gravity is too high.