A Study on the Norm-Referenced Criteria for Isokinetic Functional Strength of the Wrist for Junior Baseball Players

The purpose of this study was to norm-referenced criteria of upper limb for Korean middle school baseball player. Ninety five male middle school students with age ranging 14 to 15 years were participated in this study. They didn’t have any medical problem. HUMAC NORM (Stoughton, MA, USA) equipment system was used to obtain the values of peak torque, peak torque to body weight ratio. The results were presented as a norm-referenced criterion value using 5-point scale, by 5 groups (5 percent, 15 percent, 60 percent, 15 percent and 5 percent) and a few suggestions from this study as follows; • For the evaluation of strength, peak torque % body weights more than peak torque appeared to be more valuable information. • The provided criterion of peak torque % body weights are very information for baseball coach, athletic trainer, baseball player, sports injury rehabilitation specialists.