Hebei Women's Volleyball Athletes Takeoff Process The Investigation Of The Angle Of Knee And Hip Angle Do Main

This article through to 12 women's volleyball players in hebei province to process the buffer link feet stop takeoff knee and hip joint Angle change trend analysis and research,.Through the literature material method,experimental method and mathematical statistics will be collected image data collection and analysis,get the results of the study are as follows:1,hebei women's volleyball team athletes in the stage of the feet tion movement buffer minimum average knee joint Angle is 121.9 °± 2.77 °;2,hebei women's volleyball athletes foot takeoff buffer stage average minimum hip Angle is 127.38 °± 7.39 °;3,knee joint Angle in the subjects shows the slowly rising from the takeoff buffer stage began to experience the change tendency of the sharp rise in the decline range last twice,which fall in the second interval to minimize the knee joint Angle;4.The hip joint Angle showed a slight increase in the starting and jumping buffer stage of the subject and then descending to the smallest Angle,followed by a change trend that increased sharply after a slow rise interval.The research conclusion:1,hebei women's volleyball players feet tion buffer stage has a relatively large margin of hip flexion knee flexion and smaller amplitude of the knee joint at the same time the minimum joint Angle is slightly less than the average of the previous studies;hebei women's volleyball athletes during the takeoff buffer phase 2 of the knee joint Angle of the minimum value is not appear in the joint point of minimum value before,but after hip joint Angle began to increase about 0.1 seconds later,may be due to stretching the hip function of knee joint reaction force.3.The change of hip joint during the starting and jumping phase of the women's volleyball players in hebei province is small,which is not conducive to the full use of the force of the extended hip muscle group,which can lead to the high jump height.Suggestions in tion training attention hip strength training and emphasize the reach hip function plays an important part in the whole process of takeoff,appropriately increased amplitude and hip joint activities in the contribution in the process of takeoff.4.In the stage of the lifting and stopping of the feet,the Angle of the knee and the hip joint appeared to be consistent with the change of time,and all of them were slightly enlarged and then the first smallest value was reduced.In the buffer accelerating stage,the change trend is different from hip joint,knee joint Angle at the beginning of the hip joint Angle increases when the knee joint Angle has experienced a gradual decreasing period first,then began to increase sharply.