Analysis Of The Relationship Between Electromyography And Kinematics Of Different Leg And Arm Exercises And Coordination Of High-level Breaststroke Athletes

The purpose of this study is to understand the kinematics and electromyographic characteristics of breaststroke with different leg and arm exercises by measuring the relevant data indicators of different leg and arm practice methods.Analysis and demonstration of its correlation with breaststroke,to find out more effective breaststroke technical training methods.This study used literature,experimental,image analysis,mathematical statistics,selected 8 elite breaststroke athletes as subjects,by measuring their different breaststroke leg,arm practice means and synchronized shooting of the underwater video image,using ENG easyreport 6.0.0 for the acquisition and analysis of electromyographic data,and using KINOVEA 8.27 professional sports video analysis software to analyze the collected video images to obtain corresponding data.Through SPSS21.0,Excel,DPS and other data processing software to obtain the test muscle activation order,force duration,mean square root amplitude,activity contribution and other data,as well as the speed,frequency and other kinematic data analysis under each practice means to draw the following conclusions:(1)In a complete breaststroke coordination exercise cycle,the triceps are the first to exert force,which is the main muscle for the arm’s outer stroke phase;the biceps is the main muscle for the arm’s inner stroke phase;the anterior deltoid muscle is the main force for the arm extension phase Muscles;the tibialis anterior muscle is the main force muscle in the leg retracting phase,and the muscle has the highest degree of activation;each test muscle of the lower limbs in the leg kicking phase participates in exerting force.(2)The gray correlation of core muscle group activation,RMS value,speed,and stroke frequency of free-kickboard breaststroke leg exercise is higher than that of the other two practice methods,which is more in line with the breaststroke coordination needs for muscle coordination.(3)The degree of the core muscle group activation and the degree of gray correlation of the RMS value and speed in one butterfly kick and one breaststroke pull exercise is higher than that of the breaststroke pull with kickboard.One butterfly kick and one breaststroke pull exercise is more in line with the needs of breaststroke coordination for different muscle groups.