Plyometrics, a method for developing greater speed and explosive power, is now very popular in the athletic and fitness fields. It is based on the muscle/tendon stretch-shortening concept. This means that when a muscle/tendon is placed on involuntary forced stretch, it will contract (shorten) with greater force. More specifically:
Plyometrics was created by Dr. Yuri Verkhoshansky a former Soviet sports scientist and coach, in the late 1960s and early 1970s. He called his method the shock method which more accurately described what happens in a true plyometric action. Meanwhile in the United States Fred Wilt, a track coach, observed the Russians executing these exercises and labeled it plyometrics. In the 1980s Dr. Michael Yessis, who did some work with Dr.Verkhoshansky, introduced the shock method in the U.S. Upon reading his initial material other authors soon wrote books in which plyometrics were described as jump exercises not as shock exercises. They were easier to perform and the name plyometrics stayed with them.
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