| This paper adopts two methods of 3D high-speed images measurement and surface EMG measurement, with the kinetics and sEMG analysis of the Competitive Whirlwind foot 360°-Connecting one knee raised an independent action, finding out the main factor of Whirlwind foot 360°access with one knee raised an independent action, establishing the technique concept correctly, aimed at training in science and offering a theoretical basis, to provide data to support the motion for reducing unnecessary sports injury, and having a certain significance for enhancing the competitive level of martial arts.With the analysis, the main conclusions were followings:4.1 In the feet off the ground preparation phase, the distance between feet should be appropriate; the maximum take-off buffer time, the athletes center of gravity accounts for the relatively low ratio of height, it is easy to point away from the relatively large vertical velocity obtained.4.2 In the take-off phase, the test muscle, the EMG activity started in the order:erector spinae L→erector spinae R→vastus medialis R→vastus lateralis R→gluteus maximus R→rectus femoris R→gluteus maximus L→external oblique R→external oblique L, which, on the left erector spinae longest continuous discharge, the maximum force on the right vastus medialis muscle.4.3 In the flight phase, the athletes agers to determine their residence time in the air, is the key to the successful completion of the air movement; athletes to reverse the angular velocity of the hip was significantly greater than the angular velocity of shoulder turn.4.4 In the flight phase, the test muscle, the right external oblique maximum force, continued to discharge the longest time, the smallest force on the right vastus lateralis, continuous discharge time is also the shortest.4.5 In the landing phase, abdominal and lumbar support side leg muscles to maintain a certain degree of tension is to ensure stability in the key players fall to the ground. |
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