Biomechanical Analysis Of B200 Difficulty In Aerobic Gymnastics

Belong to the dominant class performance skills of competitive aerobics difficult XiangQun beauty,as the rules of evolution and ascension movement technology,competitive aerobics in difficult,beautiful,stable,"new" in the direction of development,the ability of high quality to complete the high score difficulty movement is an important part of the complete action competitiveness.Through analyzing the world championships in recent annual video,group B in the men's singles project difficult utilization rate is higher,the level of difficulty of the support group and B200 points in this leg support into control Vincent back to divide leg level support is to show high score ability of athletes.Sports biomechanics is to promote the sports action technology a key subject for the development of strong,paper to biomechanical analysis of B200 difficulty movement,so as to provide reference for difficulty of teaching,training,enrich the basic theory of competitive aerobics.This research adopts the infrared high speed Motion capture system,Kistler force platform and Delsys measurement methods of wireless power acquisition system did to three competitive aerobics world champion B200 difficulty movement synchronization test,kinematics,dynamics and methods of electrical data,use the tools such as system at each analysis software and Excel software parameters are calculated and analyzed.Conclusions:1.In the horizontal support stage of the split leg and the back leg horizontal support stage,the athletes were 2.15 s and 2.21 s respectively.The second support time was slightly longer than the first time,and the strength of muscle endurance was stronger.From the foot to the level of the component leg,the weight range of the center of gravity of the athletes is 70-150 mm,and the smaller the difference is,the better the preparation is.2.Cent leg support level when athletes hip flexion Angle of 12 °,120 ° abduction Angle,needs to further reduce the buckling,abducent angles to improve the quality of action,external rotation Angle of 20 °,hip joint extorsion slightly,gluteal muscle contraction to maintain stability.3.In the stage of the control of Vinson,the right thigh of the athlete was placed on the right leg,and the right hip was mainly composed of sagittal plane flexion,and the forward bending Angle reached 130,and the left hip was moved to the anatomical neutral position.At the end of the horizontal support stage of the back leg,the two sides of the hip joint appeared to be further extended,and the external rotation was characteristic of technology,4.It is very important for the athletes to maintain the stability of the horizontal support with the external rotation of their hands.The peak range of the horizontal torsional moment(MZ)is 6200-8050 n *m.Vincent take leg with both hands before the right rear power and weight than the instantaneous peak at 1.1 N/kg,for the right leg on xu li,with the right leg on gradually shift to the left after the right front hair force direction,and the hands at the same time,downward,inward,inward turning force in order to maintain a stable state.5.In the process of the completion of the movement,the athletes shoulder the elbow joint,the biceps and the anterior motor unit of the triangularis are raised and the discharge synchronism is higher;The muscles of the muscles in the muscles of the hip joint and the gluteus maximus are mainly involved in the completion of the action.