The Influence of Varied Resistance and Speed of Concentric Antagonistic Contractions on Subsequent Concentric Agonistic Efforts.

Traditionally, near maximal isometric efforts have been used to elicit the beneficial facilitations and inhibitions associated with strength and flexibility improvements using proprio-ceptive neuromuscular facilitation (PNF) and modified PNF techniques. Although concentric reversal of antagonists has been used clinically, there is little evidence regarding the concentric contraction speed and resistance levels necessary to elicit an augmented …