Biomechanical Analysis On The Movement Technique Of "the Split Step" Of Footwork In Badminton

Purpose:Through to the athletes step back of his leg when he catches pad movement kinematics analysis, expounds that the law of kinematics characteristics of athletes in the starting process, and further to the nature, purpose, this paper discusses the principle of the mechanism of muscle activity. For coaches and athletes on the rationality of the badminton technology of starting technology may be a reference for the practice and application to provide convenient and coaches and athletes of starting technology of understanding and the understanding.Methods:This research in the form of a simulation game. Using the three sets of high-speed cameras are to level2and above eight badminton players the game of3d high speed (3inl sampling frequency is120frames per second) camera to collect and use American Ariel APAS three-dimensional analytical software for athletes in situ points his leg when he left, right after step mat for three dimensional kinematic data analysis.Results:1,Starting by using in situ preparation, ankle joint should be controlled in89°to100°, the knee joint in the137°to140°, hip in121°to143°,and need a little forward than the left foot right foot16cm and the distance between two feet in54cm-57cm more appropriate.2, Athletes using in situ after starting, starting time should be adjusted to:0.16s to0.18s, empty when the height of the center of gravity variation is11.0cm to12.8cm. Left, right after, the linear relationships between all highly (|r|>0.7).3,In the buffer stage, knee joint Angle variation are larger than the ankle, hip. When left after the stretching moments at the end of the show:the right>>> right feet left knee right hip; When right after the stretching moment shows that:at the end of the right knee>> left knee left hip> left ankle> right ankle.4, Time:at the end of the left after stretching in his left ankle, knee, hip Angle is smaller than right ankle, knee, hip, left ankle and left hip negative, right ankle and right hip was positively growth; At the end of the right by stretching the moment:left ankle, knee, hip Angle is larger than the right ankle, knee, hip, right ankle and right hip basic remain unchanged and left, ankle, left hip was substantial.Conclusion: 1Athletes at right and left in situ leg pad and ready to step by buckling of lower limbs all the joints should be appropriate and the two foot spacing must be adjusted to the appropriate location, the lower limb muscle group muscles stretched in advance to ensure that the athletes can quick start.2.In badminton footwork movement mostly belongs to the movement of horizontal direction, thus can be increased by reducing the height of vertical jump level points legs active ground speed. But in the case of starting early, late can be emptied when the height of the center of gravity variation of positive adjustment.3,Left and right legs step mat by in situ points when the buffer is the most main is accomplished by knee flexion. When left after lower extremity of stretching in mainly by the right lower limb joints of extensor muscles stretching, when right next to kill is mainly composed of left and right knee extensor muscles stretching to complete.4.1n left and right legs step mat by in situ points when stretching, athlete’s left and right ankle, knee, hip size will vary with direction by different produce inverter and ankle, hip extensor muscles work way and the amplitude can follow after the direction of the stretching in different and there is a certain difference.