Electromyography Analysis Of Upper Limbs And Core Surface Of Elite Wheelchair Fencing Women Epee Grade A Athletes In Shanghai

Research purposes: this study is to analysis from the perspective of myoelectricity wheelchair fencing scoring technique upper limb strength characteristics and the core parts of the body,wheelchair fencing athletes score technical force characteristics of commonality and compare the differences of different athletes hard characteristics,for the wheelchair fencing coach targeted for technical training and choose the best means of physical training to provide the reference.Research methods: This study used american-made portable Delsys 16 channel myoelectricity telemeter and cameras synchronization acquisition wheelchair fencing athletes scored three basic technical upper body and core methods of electricity,use Delsys Analysis4.2.0 system resulting from the processing of electromyography data integral electrical related indicators,and then input OriginPro8 drawing software and Excel software to carry on the mathematical statistics,using comparative analysis,comparison and analysis each athlete muscle contribution ratio of the different stages of each muscle group,activate the strength and timing parameters such as activation,According to the size of the electrical parameter values after standardization,judge the main muscle groups doing work in different stages and different players on the same stage between each muscle group of muscle strength contribution rate,activation and activation sequence parameters,such as between different athletes to determine whether there is A common,summed up A grade wheelchair fencing women's epee athletes with characteristics of A single attack techniques.Research conclusions: 1.The main function of the forearm muscle group and the flexor of the superficial finger on the swordholding side is to control the stability of the body and head of the sword.Biceps brachii,triceps brachii and external oblique of the abdomen are the main dynamic muscles.The main function of the non-sword-holding side muscle group is to provide power for forward thrust.The upper limb muscle group,the external oblique and the latissimus dorsi are the main active muscles in the non-sword-holding side.The forearm muscle group is more active than the upper arm muscle group.The degree of involvement of the pectoralis major was small.2.The working characteristics of each muscle group in different stages are different.In the offensive stage,the extensor group is more involved in the work;in the reduction stage,the flexor group is more involved in the work;the continuous contraction time of the extensor group is longer than that of the flexor group.3.The strength characteristics of the sword-holding side muscles of different athletes are different.With the increase of the training years,the strength characteristics of different athletes have specific changes corresponding to their individual technical and tactical styles,and the strength characteristics of new players are more in line with the characteristics of traditional teaching.The non-sword-holding side force mode is similar.4.The sword-holding side activation mode is more complex,and the sword-holding side dynamics are transmitted along the core part ? shoulder joint ? upper limb ? sword body.Meanwhile,the upper limb muscle groups are activated in the order of forearm ? upper arm.On the non-sword-holding side,the core and the muscle groups of the upper limbs simultaneously coordinate the contraction force to provide power for the attack and recovery.