Research On Influence Of Javelin Of Different Weight On The Final Exertion Skill

Throw javelins sports are such fast physical strength XiangQun dominated in practice, sexual of special technical training we usually through, special strength training and special speed training these three aspects. In recent years, the domestic and foreign many experts and scholars on javelin throwing run-up stage time distribution, step rhythm and contribution, the last strength technology and javelins moves, maintain the balance, buffer left-side strut technology is a great deal of research and discussion, especially in recent years in the 3d photography in the wide application of sports science, make people throw javelins movement for every link of the last strength technology there were deeper understanding. Although throw javelins movement from the founding fathers, people began to use different weight training methods to improve the instrument, and sports achievements have also made certain training and teaching effect. But for the training effect produce process and its profound principle is not clear. In order to make it clear to throw different weight javelin throwing technology of the athletes might affect different weight, different athletes in the javelin technique, and the common trend of influence and common trend special technical training javelin enlightenment.This article through interviews with experts, the biomechanical testing method, mathematical statistics method and so on many kinds of research methods in shaanxi province, javelin team five level 1 or close to the level of the athletes with different weight javelin the last strength technology laboratory analysis, aims to draw technical parameters, offer specific for the coaches, the quantitative indicators of different weight training method javelin further consummation.The research results show that:1. Because "people-gun" system weight and center of gravity of the different structure, different weight javelin finally hurled technology in body gravity shots Angle and speed, joint Angle etc can happen series of changes, and the resulting different exercises effect.2. In different weight javelin finally hurled process, the human body the kinematics differences focus mainly embodied in the javelin shots, shooting speed, height and the Angle of the shot aspects of body gravity speed; Joint movement mainly embodied in the difference right foot touchdown, left knee straddle, differences such as bending Angle Angle. 3. The shots with javelins Angle of numerical increases the weight of the increased; With the numerical shots speed increases the weight of the javelin throw more slowly. Before entering the last strength phase, the right moment and the last strength stage on the hip is also an average speed increases with the javelin weight faster and faster. Focus speed is also increases with the javelin weight faster and faster.4. And when the left-side strut that in the left foot touchdown moment in the left knee joint Angle increases with the javelin weight more and more small, this explains javelin weight, the greater the left-side strut is inadequate. Research proposal:1. Use lighter javelin can help the athletes training methods of establishing the correct technical structure and rhythms, applicable to the beginners javelin teaching process and outstanding athletes special speed training; Use heavier javelin training methods, it will help the development of special strength effectively.2. Different weight training, advice javelin game with standard choose ball weight does not exceed 200g weight difference between the javelin, otherwise may for standard competitions with gun throwing technology structure and technical rhythm produced negative influences.3. At the training center, should adopt different weight with practice method, javelin in different stages, different period, thus making the alternate training of different ages and different levels of athletes can achieve better training effect.