Study On Isokinetic Testing Of Male Tennis Players’ Flexor And Extensor Muscles Of Elbow Joint

Purpose of research: This paper aims to make a study of main indicators of peak torque of flexorand extensor muscle of elbow joint, relative peak torque，ratio of flexor and extensor musclestrength, work and power by means of carrying out an isokinetic testing on six second-classtennis players and six ordinary amateurs’ flexor and extensor muscle strength of elbow joint whoare from Shenyang Sport University. In this way, we get to know the peak torque of flexor andextensor muscle of elbow joint, explosive strength and work of tennis players, so that somequantized reference data on muscle strength features of tennis players’ elbow joint can beprovided. By contrast analysis, we know the muscle strength features of tennis players and thesimilarities and differences between one another. Furthermore, we can draw out the features ofthe players’ elbow joint muscle strength as well as find out the disadvantage of their main elbowjoint muscles in order to provide basis for coaches to select scientific and reasonable trainingmethods to increase the efficiency and performance of tennis training and promote itsdevelopment.Methods of research: documentation, expert interview, experimentation, and mathematicalstatistical methods.Research findings: Tennis players’ peak torque of flexor and extensor muscle strength of elbowjoint and work decrease with the increase of testing speed, while the power of flexor andextensor muscle strength of elbow increases with the increase of testing speed. Under the sametesting speed and the same muscles of tennis players’ two elbow joints, we find that the peaktorque of flexor muscle strength of the dominant arm is obviously bigger than the non-dominantone, but the peak torques of their extensor muscle strength are no different. The ratio of theirflexor muscle strength and extensor muscle strength on the same arm elbow joint is among75%to95%, while there are some exceptions whose ratio is100%and beyond. Individual differencesexist. Under the same testing speed, the main indicators of tennis players’ peak torque of flexorand extensor muscle strength of elbow joint, the ratio between them and the work are obviouslyhigher than those of tennis amateurs.Suggestions: Tennis players should not only develop their flexor muscle strength of elbow jointin their routine training to strengthen hitting power and speed, but also develop their extensormuscle strength of elbow joint to maintain the balance between flexor and extensor musclestrength as well as keep stable hitting. Furthermore, players cannot put too much emphasis ontheir flexor and extensor muscle strength of elbow joint of the dominant arm, because theimbalance of muscle strength of their arms will do harm to themselves, and thus block theprogress of their techniques and performance.