Kinematics Analysis Of Zheng Muyan Breaststroke Technique Of Chinese Excellent Swimmers

Breaststroke is the slowest swim in the four swimming styles,demanding physical and technical requirements.Breaststroke has been a traditional advantage in our country.In recent years,the overall competitive ability of swimming events in our country has been rising,but the competitive level of Chinese women's breaststroke has fluctuated,and the young athlete Zheng Muyan has great potential progress in the near competitive level.At present,the research of breaststroke technology in China mainly uses two-dimensional technology to study competition results and competition video more.In this paper,the three-dimensional underwater technique is used to analyze and obtain the kinematic parameters of Zheng Muyan breaststroke,an excellent swimmer in China.1.sliding stage,Zheng Muyan body light floating position is higher,conducive to the taxiing stage speed maintenance,drag reduction technology is good.But the position of elbow and ankle joint is low,which is easy to destroy streamline body posture,so we should pay attention to the cooperative training of core flexibility and stability of each joint of the body.2.the stage of water stroke,the arm adopts wide water stroke technology,and the effect of water stroke is better,which mainly reflects the good effect of internal stroke and the outstanding technology of sending hand forward to the back arm,and the better drag reduction technology.But the flexibility of shoulder joint is weak,and the movement of sending shoulder is not sufficient,so the training of stability control ability of upper limb should be strengthened.3.At the stage of 3.clip,the technique of fast retting and fast pedaling frog swimming leg is adopted,and the technique of side retting leg and lateral turning is adopted in the stage of retting,so the technique of avoiding obstacles is better.But when the leg begins to close the leg has upturned movement,causes the face resistance to be bigger,because the leg strength is weak,the pedal clamps the water speed to be slow,the ankle joint stability is weak,does not have the complete extension,should pay attention to the lower limb strength training,strengthens the ankle joint fast retracts the turn exercise.4.the matching technique is better,the closing time is earlier than the beginning of the extension arm,and the pedal time is later than the end of the extension arm.The legs are closed earlier,but the pedals are slow.When extending the arm,the knee joint extension is weak,when starting to push the leg,the shoulder joint flexibility is weak,not completely straight,should strengthen the body each joint flexibility extension training.5.Zheng Muyan adopts glide type coordination technology,arm stroke technology is outstanding.But the movement frequency of external stroke is slower,and the speed of pushing and clamping water is slower.Physical training should be strengthened to improve the control ability of the core muscle group,and special attention should be paid to lower limb strength training.