STUDIES ON THE FUNCT,IONS OF SPRINT EXERCISES ON JUVENIL'E JOINT TORQUE

Abstract

The purpose of this study is to discuss the function of sprint on development of juvenile muscle strength. The study tests and the isokinetic strength of 30 ordinary healthy boys and girls and 30 ones from Physical Educational School, carrying out the test of the shoulder, hip and knee joints according to 3 different angular velocities: 600 /s, 1200 /s and 2400 /s. The main index of the test is: the Peak Torque of muscle tissues caused by joints extension and f1exion; poking into the function of sprint exercises on juvenile muscle's development. The outcome indicates that: sprint exercise has a distinctively positive effect on boys' development of the muscle strength of shoulders, hips and knees, and the coordination of the harmony of Flexion and Extension muscles. Whereas, sprint only exerts an apparently positive effect on girls' knees, but not hips and shoulders.