Swing Leg Exercise Influence On The Effect Of The Long Jump In Male Students Of Physical Education

Swing skills have play an important role in the structure of take-off jumping. The more strength and speed you use when jumping,the more power of the stretch you get. In a sense,the role of the swing actions is much more important than ground force. The thesis applys documentary method,experiment method,rapid photography method, video-aided analysis and mathematical statistics method into the research, and chooses thirty eight male freshmen who come from Wuhan Institute of Physical Education as voluntaries, which containing 14 groups students as experimental group from tennis and 3 groups as control group from basketball.We have trained them about ten classes for weight-bearing exercises of swinging leg,researching the influence on the effect of jumping and the performances of sport, to test its validity and feasibility and provide feasible and useful methods for trainers and coaches and help students have a good marks. The results are followings:1.There exists a prominent discrepency between experimental groups and control groups on long jump and triple jump,but there is a little difference between three-miles and standing jump. It shows that it will have a desirable influence on take-off and swing if teachers adopt weight-bearing exercises of swinging leg into jumpping teaching.2.There exists a prominent discrepency between the speed of swing and scope of swing on the moment of take-off, maximum cushioning and touch down, the experiment groups do much better than control groups.3.There are many differences among cushioning time,the speed of take-off,the core vertical speed of maximum cushioning, the core vertical speed of take- off, the speed of spring, and the angle of the spring etc., the index of the experiment students are much closer to the need of jumping skills.4. Excersices of Weight-bearing swinging leg enlarge the speed and angle of take-off,minimize the time of cusion,decrese the loss of horizontal velocity,as well as enhance the skills of jumping, making it more cohenrant to run-up and take-off. Thus students can have agood achivements.