ABSTRACT
Fine coordination of both the upper limbs is essential for various tasks performed in baseball batting. During this motion, the upper limbs and the bat form a closed kinematic chain loop that causes kinetic redundancy. This closed loop prevents us from calculating single hand forces and moments from only kinematic data. That is likely the reason why there are few studies on the kinetics of the upper limbs during batting motion, most of them rather being on the kinetics of the lower limbs using one (Messier et al.,1985) or two force platforms (Welch et al.,1995).
