Here I have NFL athlete & Tampa Bay Bucs Super Bowl Champ Kevin Minter on overhead z press on XPT power rack using immediate post activation protocol I refer to as Spring Loaded Potentiation Protocol or SLPP using 90 Degree Eccentric Isometrics.
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Let’s discuss Spring Loaded Potentiation Protocol (SLPP).
The Spring Loaded Potentiation Protocol relies on an immediate form of post activation potentiation as the lifter’s muscles & nervous system are essentially hyper-activated on the eccentric isometrics as the lifter stores elastic energy in their muscles before immediately releasing into an explosive concentric.
In reality the concentric or explosive phase feels inordinately light for 4 likely reasons all related to post activation potentiation.
1)The super-loaded eccentric isometric (coiling phase) wakes up additional motor units which stay activated for the explosive concentric. 2) The eccentric isometric forces those available motor units to fire more frequently. 3) There’s greater amount of calcium released per action potential thereby increasing force. 4) There’s increased calcium sensitivity of myosin light chains which produces stronger contractions.
In other words the pre-loading with greater tension on the eccentric turns the muscles into spring-loaded pistons during concentric to make the athlete more explosive & powerful. This is accomplished by having a partner apply manual tension/added resistance to the lifter on the eccentric as I do to Kevin in these vids.
Read more about Post Activation Potentiation here in full 3-Part Literature Review at copy paste [ Ссылка ]
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