To determine the effect of specific isotonic resistance applied through the overhand throwing range-of-motion on the velocity of a baseball 3 groups of Ss (varsity baseball players) were studied. Group I trained for 6 wk. with an isotonic resistance device; Group II trained for 6 wk. by throwing, and Group III took the pretest and posttest only. The results indicated that velocity of baseball throwing can be increased significantly by means of moderately light resistance applied specifically through the overhand throwing range-of-motion.
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