Analysis On The Lower Limb EMG Of The Sprinters Between The Steady Phase Of Sprint And Part Of Power Training Means

The modern sprint technique is thought be the high speed swings of two thighs,that the two thighs high speed swings and brakes as axis is sprint technique core.New sprint technique idea has been outstanding swing technique significance,its need to reinforce the study on lower limbs muscle contract mechanism and the means to improve swing technique right now.In order to make commonly used in today's training methods and means of sprint and the clearer congnition on the correlativity between the exercises and the sprint technique,from the camera and synchronized electromyogram telemetry test on the EMG of the lower limbs muscle between the steady phase of sprint and parts of strength exercise means.From the EMG test on the six sptint of male during the steady phase of sprint to discover the EMG characteristics of the lower limbs muscle,and the test on the six share queen muscle group exercises at the same time,to discover the synchronicity and sequence of the muscle contracts. From both EMG characteristics contrast to discuss how to the trainning means accrod with the sprint needs.The study discovers:the EMG characteristics of the lower limbs muscle during the steady phase of sprint is obvious sequence and coordination between muscles.The coordination among gluteus maximums, biceps femoris,semitendinosus and semimembranosus,gastrocnemius is similar between currently used supine hip-arched and the drive during the steady phase of sprint,but only the intensity that muscle contracts weaker during supine raise hip.The EMG characteristics of the straight leg backward swing pulling eraser practice is the timing of discharge and the coordination among gluteus maximums,biceps femoris,semitendinosus and semimembranosus.The coordination among biceps femoris,semitendinosus and semimembranosus, gastrocnemius in the prone bent knee pulling eraser practice is similar with the swinging phase,amortisation phase during the steady phase of sprint.The EMG characteristics and action structure of the prone stand on the knees are different from the steady phase of the sprint.The coordination among gluteus maximums,biceps femoris, semitendinosus and semimembranosus,gastrocnemius in prone swing the legs are similar with the swinging phase of sprint.This practice can serve as a mean to improve Specific Forces of swing.