Muscle electrophysiology changes during serving tennis
- VernacularTitle:网球运动发球动作过程中肌肉电生理变化
- Author:
Chun SHEN
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2007;0(28):-
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:Presently,studies on changes in muscle electrophysiology data during tennis training by electromyography are few. OBJECTIVE:To record muscle straining rule when serving a tennis by electromyography,and to analyze the active state of muscle from main joints. DESIGN,TIME AND SETTING:Tracing analysis of serving tennis on the spot by electromyography. The experiment was performed at the Peking Sport University from December 1986 to December 1988. PARTICIPANTS:Six national male tennis athletes aged(20.8?2.5) years,with the height of(180.3?4.8) cm and weighing(69.1 ?5.8) kg,training duration(6.6?2.9) years. METHODS:Tennis serve was traced by electromyography and joint angle analysator. Straining sequence and condition of muscle was analyzed with a specialized software. MAIN OUTCOME MEASURES:Analysis of serving;muscle active sequence;Muscle straining time and joint angle;Muscle straining power. RESULTS:In the process of hitting the tennis serve,the deltoid and trapezius muscles of the first participation,and duration than other muscles are long and very large contribution to the force. Trapezius,tibia and gastrocnemius muscle were first involved in the movement of power and the duration of time than in other muscles. In the course of serving,muscle electromyography activity continued in accordance with the duration of order of pectoralis major,rectus abdominis,latissimus dorsi,gastrocnemius,oblique externus abdominis muscle,and rectus femoris muscle,biceps brachii,tibial muscle,brachial radial muscle,trapezius,deltoid muscle,in which deltoid muscle and ramps side muscle lasted the longest time in electromyography activity. The pectoralis major and rectus abdominis continued shortest time in electromyography activity. Because different athletes and different muscle,electromyography integral value is not the same,and corresponding muscle strength is also different,and there is a big difference in muscle accounting for the largest proportion of muscle strength. CONCLUSION:Surface electromyography tests can be applied to tennis action technical process of the scientific and rational judgement analysis.
