Traditional thought would say that this helps increase the turnover rate and thus, in turn, could shift the force-velocity curve to the right, meaning faster movements with higher loads. This phosphorylation is thought to potentiate subsequent contractions by altering the structure of myosin head and moving it away from thick filament backbone. After being released, they then bind to calmodulin. This kinase is activated when calcium molecules are released from sarcoplasmic reticulum during muscle contraction. Phosphorylation or the adding of a phosphate molecule is done through catalyzation of an enzyme called myosin light chain kinase. The phosphorylation of regulatory light chains, increased recruitment of higher order motor units, and changes in pennation angle of the muscle fibers. The research has shown that there are three proposed mechanisms behind PAP. In the past decade, there has been a significant amount of research done on PAP and rightly so because of its wide range of performance improvements. Although there are many ways to implement PAP into workouts, we are still unclear as to the underlying physiology of PAP. Whereas contrast training is a heavy set followed by a relatively lighter set over a period of time, aimed at improving maximum strength with use of submaximal drop sets. half squat and vertical jump), aimed at improving rate of force development or the ability to put force into the ground over a short period of time. Complex training involves a heavy compound exercise, followed by plyometric exercise with similar movement pattern (i.e. This is the underlying mechanism that training methods such as complex, contrast, and French contrast all seem to improve. PAP can be used to improve short-term performance in sprinting, throwing, swimming, and jumping capabilities.

Post Activation Potentiation (PAP) is a phenomenon by which muscular performance is temporarily enhanced as a result of the subsequent conditioning activity.

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