On The Kinematic Analysis Of Back Gliding Technique Of Female Juvenile Athletes In Liaoning Province

The speed of shot is the superposition of sliding, transition. All links are inseparable and complementary. In the view of kinematics, this paper comprehensively analyzes the back guliding techniques data of Liaoning province's female athletes of shot. With the aim of some suggestions of scientific training to Liaoning province's female athletes of shot giving and improving the sport level of this event.Compared with top athletes, the average body center gravity horizontal velocity of 7 young female shot-putters is obviously low at the sliding step. Compared with top athletes, the transition time of the 7 young female shot-putters is long in the transitional stage. Compared with top athletes, the left knee cushion angle of the 7 young female shot-putters is small. So at the preparatory stage, the left leg's brake effect is not very ideal. In the final acceleration stage, the top center of gravity speed maximum and the time of the 7 young female shot putters'has are of some difference from those of top athletes In the whole technical process, the actions of the 7 female young shot putters also have a remarkable difference. In slides at the step stage, the instantaneous shot speed of right foot of Wei Ping and Jiang Meng is smaller than that of their right foot which is well-grounded the instantaneous bodily center of gravity speed. The two thigh angles of Liu Shuang, Jiang Lan, Jiang Meng and Zhang Yixuan are bigger than those of the others. At the transitional stage ,the speed of hips of the 7 female shot putters have some change. After the landing of right foot ,the speed of the right hip is faster than that of the left hip. At the final acieration stage, only Liu Shuang could realize the body to shot's positively. She could fully put the strength to throws on the arm and the shot and makes the good final forcible progress.Overall, the 7 female shot putters all have the potential to enhance the back-slider technique. Therefore, we suggest that the trainer should strengthen the lower limb strength training, and after grasping the left leg landing good, the stable support movement, forms the full surmounting instrument movement to make an effort the shot to get rid finally to prepare for. Increases the right leg thigh strength specialized training, strengthens right leg's pedal to extend the strength, the pedal to extend the scope and the speed, obtains the big pedal reacting force. The trainer should strengthen the technical training the quality, enhances the training the scientific nature, increases the technical training method, the method multiplicity and the effectiveness, target-oriented achieving"person - ball"complete technical stable performance.