Acute Modulation of Segmental Angular Momentum by Loaded Whole-Body Vibration During Baseball Batting in Adolescent Athletes

Introduction

Baseball batting requires rapid coordination of multiple body segments as the movement progresses from preparatory loading to trunk rotation and bat–ball contact. Although whole-body vibration (WBV) has been used as a short-duration conditioning method, little is known about how vibration combined with different external loads alters segmental rotational behavior during baseball batting, particularly in adolescent athletes. This study examined phase-specific changes in segmental angular momentum following unloaded and loaded WBV conditions.