Experimental Study On The Effect Of Gluteal Bridge On Core Muscle Electromyography Based On Six Degrees Of Freedom Platform

Objectives:The glute bridge is simple and easy to learn,safe and free from site restrictions.As one of the most common ways of core strength training,glute bridge has been favored by ordinary fitness enthusiasts and bodybuilders.Compared with traditional core strength training,unstable training can better stimulate core muscle group and improve core stability.It provides the conditions for this study.Methods:In this study,19 professional male bodybuilding athletes from Wuhan Sports University were recruited as experimental subjects.The static gluteal bridge was completed in30 s under 12 modes in total 13 modes on the stable mode and the six-degree-of-freedom platform,and the electromyographic data of 7 superficial core muscles including rectus abdominis,external oblique abdominis,rectus femoris,latissimus dorsi,erectus lumbar,gluteus maximus and biceps femoris were collected.Noraxon surface electromyography was used to analyze the influence of gluteal bridge movements on root mean square amplitude(RMS)and integrated electromyography(i EMG)of core muscles during unstable training in different directions and frequencies on the six-degree-of-freedom platform,and to summarize the muscle force generation rule under different modes and frequencies of exercise on the six-degree-offreedom platform.Results:The study found: It was found that creating a non-stable environment using a sixdegree-of-freedom platform could greatly increase the participation of the lumbar erector spinae muscles,and the effect was most significant in the medium and high frequency rotation modes.The 12 movement modes of the six-degree-of-freedom platform did not produce significant effects on the rectus abdominis,external abdominal oblique,rectus femoris,latissimus dorsi,and biceps femoris.As the frequency increased,a decreasing effect on the activation of gluteus maximus was produced.As the frequency of the six-degree-of-freedom platform movement increased,the force pattern dominated by the lumbar erector spinae and gluteus maximus muscles gradually switched to a pattern in which all core muscles acted in concert.The muscles do not show greater activation due to the increased degree of non-stable conditions,so it is important to consider not only the effect of muscle firing but also the change in firing patterns when training.In this study,Noraxon surface electromyography was used to analyze the influence of static gluteal bridge movements on the surface electromyography indexes of core muscles during unstable training of different directions and different frequencies on the six-degree of freedom platform,to summarize the force generation rules of muscles under different modes,and to find the unsteady environment suitable for gluteal bridge training.Therefore,it provides the corresponding theoretical basis for the ordinary fitness enthusiasts and athletes in the aspects of sports and fitness.