After being informed about the study and the potential of risk, all participants will undergo a screening to determine eligibility for study entry and giving written informed consent.~We will include 20 participants who have pitch 100 times with dynamic taping or shame taping in randomized sequence. There must be more than 2 weeks resting between 2 test. We will test maximal force in shoulder flexion, extension, abduction and adduction before and after test. We also record spins and speed of baseball for performance outcome.~To our hypothesis, we suggest dynamic taping could decrease the arm fatigue after long-term pitching.
The purpose of this study is to assess the efficacy of dynamic tape in prevent shoulder muscle fatigue.