Surface Integrated EMG and RMS Characteristics of Muscles at Different Heights
The EMG characteristics of lower limb muscle groups in different jumping height were analyzed by litera-ture data method,experimental method and mathematical statistics method.Eight national first-class volleyball players were selected as the experimental subjects.The aim was to analyze and study the trend of surface EMG characteristics of lower limbs in high level volleyball players.According to the research results,on the basis of pre-vious research,the influence of high individual factors on the mechanism of"elongating-shortening cycle"is an-alyzed and combined with the corresponding research results,the research content of the depth is enriched,and the relevant biomechanics of the depth are improved.Better for the volleyball team in the future training and prevent the occurrence of sports injury to provide a certain realistic basis.Results:1)With the increase of falling height,the RMS value of lower limb muscles increased during the buffer period and push extension period.According to the root mean square value,the gluteus maximus,rectus femoris,biceps,gastrocnemius and tibialis anterior mus-cles contract faster at a falling height of 40cm.2)The surface integrated EMG value of the measured muscles in the mobilized lower limbs also increased with the increase of the falling height,especially during the pedal exten-sion period.According to the integrated EMG values of the measured muscles,it is concluded that in the buffer stage,the main force muscles of the lower limbs are biceps femoris,rectus femoral,gastrocnemius,tibialis anterior and gluteus maximus.In the pedal extension stage,the main force muscles of the lower limbs are:gluteus maxi-mus,biceps femoris,gastrocnemius,tibialis anterior,rectus femoris.
single foot jump depthsurface EMGintegral EMG valueroot mean square
NETL
NSTL
万方数据
