Science of Plyometrics
Plyometric exercises refer those activities that enable a muscle to reach maximal force in shortest amount of time. Mechanical and neurophysiological components of plyometrics There are two major physiological components which plyometric is based upon. One is mechanical in nature and explains how energy is store within and released by the musculotendinous complex or unit. The other is neurophysiological in nature and explains reflexive muscle action releases stored energy. Mechanical component The Series Elastic Component (SEC) is the workhorse of plyometric exercise. The SEC is made up mostly of tendons although some muscle tissue is included. How the SEC works is when the musculotendinous unit or complex is stretched or lengthen (as in an eccentric muscle action) elastic energy is stored. If the muscle begins a concentric action immediately after the eccentric action the stored energy is released
The SEC contributes to total force production by naturally returning the stretched or lengthen musculotendinous unit to its unstretched state. If the concentric action doesn't immediately follow the eccentric action or is the eccentric phrase is too long the stored energy is lost as heat.
The exact degree to which both of these components (mechanically and neurophysiological) contribute remains speculation. It seems likely both contribute to increase the production of force seen in plyometric exercise.
Stretch-Shortening Cycle (SSC)
Plyometric training like resistance training can be programmed into a periodization cycle. The progression of plyometric within a periodized model depends on two major factors: intensity and volume.
Factors which determine intensity level:
Factors which determines volume: