The Application Of Rapid Expansion Compound Practice In The Teaching Of Shot Put

Rapid retractable compound practice is an elongated and shortened form of the combined practice,which is that,when the body are keep fonction,the centrifugal elongated contraction and then the centripetal contraction.It is with great importance,to promote students’ fast developed strength,and for throwing class,jumping class,and ball games,the motion infrastucture is very easy and the training revolution is precious.Lead ball movement belongs to fast force type project,need to combine strength and speed of quality highly effective together,cooperate flexibility,coordination wait for other quality to achieve outstanding athletic achievement.The fastly expansive concreted practical combination the speed up,unflexibility,coordination and other qualities to effectively improve the physical quality of the lead ball project.In the study of previous researches,rapid expansion and compound exercises are mainly used in long jump,javelin,football and other sports,and rarely applied to lead ball projects.The aim of this study will be rapid expansion composite practice used in the shot put project,designed to help students improve the shot put,on the other hand also to rich the theory of sport training plays the role of.Adoption of rapidly expansive compound exercise to lead shot put teaching object,the learing effect is analyzed and poached.The following concreted answer are gotten:1.In the three contents of putting the longer jump,putting the shot in the same place,and the three indexes of the shot put,the students of the experimented class promoted tremendously(P<0.05),and the improvement of 30 meters was smaller(P = 0.05).2.In the two grades,the number of students in the experimental class was higher and the students performed better.3.In grade 3,the number of experimental classes is higher and students perform better in both excellent and good grades.