Those not familiar with strength training as it relates to baseball athletes (or athletes in other sports requiring overhead throwing) may believe that the secret to improving speed and longevity/conditioning in the throwing arm of these athletes lies solely in the continued development of the throwing arm. Coaching specializing in such athletes, however, know that the secret to developing a strong, powerful and well-conditioned throwing athlete resides in the development of the entire kinetic chain. The throwing process requires the hip, trunk and shoulder muscles to exert a maximal amount of force in a minimal amount of time. By efficiently transferring energy from the lower extremities through the torso and finally through the upper extremity maximal force can be produced. Thus, implementing a strength & conditioning program that focus on the proximal-to-distal sequence of motions: stride, pelvis rotation, upper-torso rotation, elbow extension, shoulder internal rotation, and wrist flexion, while also facilitating an increase in motor unit recruitment should be considered.
Plyometric-type exercises have been linked to improving throwing capability and longevity by addressing the movements noted above. I'm curious to know from others what specific plyometric exercises you use in your programs and what other means of development you've implemented to both strengthen and condition an athlete that participates in sports that incorporate overhead throwing (namely pitchers).
That's all for now!