Technical Diagnosis Of The Fifth Hurdle Hurdle Step And Inter-hurdle Run By Wang Dou, An Excellent Chinese 100-meter Hurdle Athlete

This paper takes the fifth column hurdle step and inter-column run in the pre-National Games 2017 test of Wang Dou,an outstanding Chinese female hurdler,as the research object.And it adopts literature research methods,image analysis methods,comparative analysis methods and other related research methods to make the comparison of technical indicators with domestic and foreign athletes.That is to find technical indicators with gaps provides a theoretical basis for their technical analysis,helps to improve their specific technologies,and provides certain reference for the scientific training of women's 100m hurdles in China.The results of this study show that:(1)Wang Dou has a long beginning span distance across and meets the technical requirements of "long-distance span".However,during the beginning span stage,the extension effect is not sufficient,the center of body weight is excessively undulating,and the span angle and the trunk angle are too small,resulting in a span that the speed dropped obviously,and there is an obvious gap with outstanding foreign players.(2)In the process of vacating,compared with the excellent athletes,Wang Dou's vacating angle is bigger,and the body has a higher body center of gravity when she is up the hurdle and a longer center of gravity,which make her vacating stage has a longer period of time.(3)Wang Dou was close to the lower column in the process of the next column.It conformed to the technical requirements of "near the lower column".The momentary center of gravity of the landing moment was close to the level of the world's best players.At the same time,the joints at the moment of the landing angle were larger,indicating that the joint support was more positive;But compared with outstanding athletes from abroad,Wang Dou has a problem that the angle of the ground is too small and the body's center of gravity is lagging.This causes a significant decrease in the speed of the landing of the lower column,affecting the running between the following columns.(4)In the process of Wang Dou's running between the back columns of the lower column of the fifth column,the main problem is that the first step is short,the three-step structure is unreasonable,the speed performance is not stable,and the support time of running between hurdles is too long.In addition,the body center weight fluctuations are too large.(5)Analysis of the relevant velocity parameters of the first step after tying the cross between the previous step and the next column,it shows that Wang Dou has a relative strong ability to combine the hurdling step technique and the technique of running beteween hurdles.There is still a flaw in the combination of the previous attack step and the hurdle step technique.