Something interesting came up in the ASMI/Farrenkopf thread that I wanted to seize on and explore. Lefty lefty made a comment that it's possible that Marshall's pitchers tend to be injured less often because of their training regimen. This point has definite merit.

During the pitching motion, the stress on the elbow joint actually exceeds the tensile strength of the Ulnar Collateral Ligament. In particular, a 1992 study by Fleisig and Barrentine showed valgus torques on the elbow of 64 N-m (this force was exerted just after footplant, and it could be exacerbated if the arm were not up at footstrike, go Kyle!). This is higher than the torque at which medial collateral ligament lost integrity in a 1989 Dillman/Fleisig study (approximately 32 N-m).

The fact that the medial collateral ligament alone cannot withstand these stresses demonstrates that other musculature or anatomy is at least somewhat responsible for stabilizing the elbow during early acceleration. The triceps and muscles of the proximal forearm are most likely responsible, and training of these muscles and others could absolutely reduce risk of injury.

For another instance, the obliques are a source of constant problems for some (often very tall) pitchers because of their relative weakness. Training these areas has been shown to reduce injury risks as well.

Obviously, training in general reduces the risk of injury, but if Marshall has devised a very good set of pitcher-training tools that would certainly be of merit.

I remain skeptical of his other claims.