| The difficulty of action is one of the key technologies of tai chi, tai chi difficulty action analysis to promote Wushu Taijiquan training of scientific, standardization has a certain practical significance and guiding values. The article Select Taijiquan Outward Leg Swing the lotus360°and knee independent action as the research object, using the three-dimensional force platform and surface electromyography analytical instruments for testing, and analysis of the major lower limb muscles involved in the action, the purpose is to reveal the impact of its actions to complete lower limb muscle movement variation characteristics to explore the impact of the completion of its technology from the Perspective of muscle movement key factor.Results:1Action Action higher success rate of90%, a higher proportion of the landing stage, the take-off stage and vacated a relatively short period of time, the time was1.27±0.28s,0.61±0.05,4.39±1.76s. Take-off impulse to646±138.2ns, the take-off speed of9.19±1.11m/s, landing the cushioning period in force is6120±1700.39N.2The left tibialis anterior muscle is activated, the duration of up to0.70s, followed by the right tibia anterior muscle and left femoral biceps, EMG larger left peroneus longus224.70±53.72uvs and right rectus femoris from218.91±33.16uvs, the left side of the muscle integrated EMG value873.94uvs contribution rate.3During the flight phase, the left biceps femoris, semitendinosus, tibialis anterior muscle, gastrocnemius outside and right semitendinosus, rectus femoris, and peroneus longus longer duration, EMG values for left semitendinosus right rectus femoris and left biceps femoris, gastrocnemius. 4Floor stage right peroneus longus duration of up to6.01s, followed by anterior muscle of the right tibia and right semitendinosus right tibialis anterior muscle power values up to1362.91±108.96uvs, followed by the right peroneus longus and shares the biceps, the left muscle integrated EMG value1077.74uvs, integrated EMG on the right is4709.52uvs the right contribution rate was significantly greater than the left side,5The entire action, the muscle is activated to discharge, mainly concentrated in the take-off stage of the late stomp period of time and the flight phase, the landing stage mainly involved in muscle muscles on the right. Longer duration of muscle right peroneus longus and tibialis anterior muscle, right peroneus longus, the straight muscle tibialis anterior muscle and shares, the left tibialis anterior muscle, the semitendinosus muscle power value larger.Conclusion:The operation time characteristics, the subjects compared to the take-off and flight phase, the difference is small, a larger difference between the landing stage. During take-off, both sides of the legs is not uniform force, but the emphasis on the left leg, the flight phase, the left muscle relative EMG, landing stage, the relatively short duration of the muscles on the left, EMG smaller. Throughout the course of action, the right and left muscle are activated to discharge, the muscles on the left of relatively short duration, muscle EMG relatively small, the contribution rate is smaller, the relatively long duration of the right side muscle, muscle EMG values is relatively large, the contribution rate.Recommendation:extended floor buffer time, to ensure the quality of movement, reduce sports injuries; skilled action technology to increase the speed and stability of the air action; strengthen the lower extremity muscle strength training, coordination of muscle development. |
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