Post by Jonathan Slowik, PhD on Apr 19, 2017 7:56:12 GMT -6
While there is not yet a study I can point you to that explores the relationship between 'a forearm training regimen' and 'TJ rate', there are studies showing that many of the forearm muscles can produce a varus moment at the elbow that can counter the valgus load during pitching. This would reduce the load on the UCL.
So while there's lots of strong science behind the idea of muscle strengthening to reduce the load on the UCL, research has not yet been performed/completed/published to detail any direct relationship between strengthening programs and TJ rate.
If you would like to read more about muscle contributions to varus/valgus moment, you can search for the following articles (or perhaps this is the 'stuff' you have read already).
Lin, F., N. Kohli, S. Perlmultter, D. Lim, G. W. Nuber, and M. Makhsous. Muscle contribution to elbow joint valgus stability.J. Shoulder Elb. Surg.16:795–802, 2007.
Seiber, K., R. Gupta, M. H. McGarry, M. R. Safran, and T. Q. Lee. The role of the elbow musculature, forearm rotation, and elbow flexion in elbow stability: an in vitro study.J. Shoulder Elb. Surg.18:260–268, 2009.
Udall, J. H., M. J. Fitzpatrick, M. H. McGarry, T. B. Leba, and T. Q. Lee. Effects of flexor–pronator muscle loading on valgus stability of the elbow with an intact, stretched, and resected medial ulnar collateral ligament. J. Shoulder Elb. Surg.18:773–778, 2009.
Buchanan, T. S., S. L. Delp, and J. A. Solbeck. Muscular resistance to varus and valgus loads at the elbow. J. Bio-mech. Eng.-T. ASME120:634–639, 1998.
Buffi, J.H., Werner, K., Kepple, T. and Murray, W.M. Computing muscle, ligament, and osseous contributions to the elbow varus moment during baseball pitching. Annals of biomedical engineering. 43:404-415, 2015.