In an article by Daniel Lorenz for the international journal of sports physical therapy, the effects of overloaded training is the main focus. The article shows the effects of overstimulation has on rehabilitating athletes. In the last post we talked about how physical activity can maximize performance in all other aspects, while this one puts the implementation of high expenditure for patients recovering from tendinopathies, muscle strains, and ACL reconstruction. This study is extremely interesting not only to those recovering from these common injuries and procedures, but also everyday athletes that want to help maximize their performance to perfect their craft. “During voluntary contraction of a muscle, speed of contraction and ability to exert tension are inversely related. The faster a muscle contracts concentrically, the lower the tension it is able to generate. Tension in muscle fibers when lengthening is considerably greater than when muscle fibers are shortening.” (Lorenz 1) He is explaining the process in the buildup of oxygen versus the buildup of acid in the muscles through lessening the length of time used to expend the energy to enforce a higher use of oxygen. this relates to the method of increasing activity to assist in cognitive function. While the last post talked about how the use of muscles affects oxygen levels, this article speaks about more efficient ways of using the heightened oxygen levels to perform the exercise better.
Lorenz, Daniel, PT, DPT, ATC,C.S.C.S., U.S.A.W. (2010). Eccentric exercise interventions for tendinopathies. Strength and Conditioning Journal, 32(2), 90-98.