The primary objective of this study was to investigate the influence of segmental mass and body composition on the upper extremity biomechanics of overweight youth participating in baseball activities. The study used a regression framework to investigate the relationship between whole body, throwing arm segmental mass and body composition measures to kinetic variables about the shoulder and elbow. The multivariate regression results indicated a strong positive significant relationship between each of the mass variables to that of the moment variables about the shoulder and elbow. Participants who had a greater percentage of fat mass produced greater injury correlated moments about the shoulder and elbow.
Garner, MacDonald, Johnson, and Ford are with the Applied Biomechanics Laboratory, Dept. of Health, Exercise Science, and Recreation Management, University of Mississippi, University, MS. Wade is with TigErgonomics Laboratory, Industrial and Systems Engineering, Auburn University, Auburn, AL.