Kinematic Research On The Deliver Step Techniques Of The 10^th National Games Female Javelin Athletes

Female javelin was once an advantage project of our country, had carried off the world champion in the 1990s, and had entered the advanced ranks of the world. However, in recent years, the woman of our country javelin moves competence is in stagnating basically, even presenting the phenomenon glided, it is in many aspects to trace it to its cause. It is an important reason that the technology of the athlete of javelin of our country lags behind. Because javelin technology is one of the projects with relatively more complicated technology in the track and field sports, and connects each other and restricts each other between each technological link. Based on literature datum method,pix photography method and analytic method, selected works choose the tenth the whole country in the People's Republic of China to transport to the athlete who know the top 8 of track and field events female javelin throw finals as the research object, adopt the victory of liking - EIMG71 analyzes the system and throws step technology and analyzes research to it, try to get the kinematics technical parameter of throwing step movements, individuals adopted throw the way uniquely when achieving better sport achievement with more different athletes according to the kinematics parameter, in order to obtain different technological styles; Meanwhile, compare with the outstanding female javelin athlete of the world; attempt to find out its advantage and deficiency of throwing step technology. Making us know the complexity and variety and the athlete's personal characteristic and style of the sample of the javelin movement further, in order to make the drill program of the movement scientifically in the future, will define the movement trains the task, design sports and train the procedure, choose the method that the movement trains, controlling sports trains the course to offer certain scientific basis and reference value. Through carrying on kinematics research to the throw step technology of 8 athletes of the tenth National Games track and field female javelin finals of our country, the result shows:1. Throwing the run-up will have certain influence on the participating in the result of the javelin, of our country outstanding female javelin athlete run-up speed is very fast, but the utilization ratio of the speed is not high, link up and analyses that can find out the intermediate link remains to strengthen out of every technology.2. It is the third step sequentially that the outstanding javelin athlete throws step by step long in our times, the second step, the 1 st step, the 4th step. The outstanding female javelin athlete of our country accords with this characteristic basically. But it is short at the time of athlete's step to be of our country, the step is quick frequently, may link up insufficiently and perfectly in the middle.3. The inclination has little change after the outstanding female javelin athlete of our country throws every step truck, change relatively heavy inclination have after the truck, world of player, prove of our country athlete throw But he exert oneself movement range that javelin exert oneself player little than world correctly finally, not enough in application of force to the javelin.4. The knee angle is pretty much the same as the player in world when the left foot of throw step of the outstanding female javelin athlete of our country falls, but buffer angle difference bigger, so that make the left knee buffer too big, the result is bad to apply the brake, have influenced the momentum of the body low limbs to influence and throw the achievement finally to the transmission of the upper limbs directly.5. The most crucial step that the step is thrown in the step that the last one cross. The horizontal speed of the centre of body weight after steps show positive correlation to a certain extent to throw the achievement and cross. Namely the speed is the smaller lost, it is the better to throw the achievement. And to the conclusions drawn, have proposed consulting the suggestion flowingly.1. Though of our country outstanding female javelin athlete run-up speed is very fast, the utilization ratio of the speed is not high. Cross under situations that the purposes of steps lie in keeping the human body moving fast, the ones that finish the truck turn back and form the rational one and then incline in the angle further, create the good muscle mechanics condition for having an effect. After the step that javelin athletes of the woman of our country cross right foot lands, the left leg has no positive putting ago, it is not enough to cause the horizontal speed of weight to go up. Putting the speed ago of the ones that should accelerate left leg in training, improve the horizontal speed of center, reduce speed losses.2. The inclination has little change after the outstanding female javelin athlete of our country throws every step truck, the inclination is relatively great in change after the truck of the player in world, prove it is younger than the player in world that the athlete of our country throws step and range of exerting oneself movements finally, it is not enough to surmount degree of apparatus, it is difficult to form the posture of preparing before favorable participating in. Should incline in the angle after strengthening the third, 4 steps truck in training, in order to extend the job distance exerted oneself finally, help the full play and use of the speed.3. The knee angle is pretty much the same as the player in world when the left foot of throw step of the outstanding female javelin athlete of our country falls, but buffer angle difference bigger, so that make the left knee buffer too big, the result is bad to apply the brake, have influenced the momentum of the body low limbs to influence and throw the achievement finally to the transmission of the upper limbs.