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Resistive static contraction facilitation technique applied by manual resistance using a proprioceptive neuromuscular facilitation patternin the mid-range pelvic posterior depression technique(RSCPDT) or anterior elevation technique (RSCAET) with the subject on the affected side produces greater increase in range of motion of remote parts.However, few studies have providedevidences for neurophysiological remote effectsof resistive static exercise that consider the direction of resistance force. The purpose of this study was to clarify therebound effects of RSCPDT on the time-course of excitability of the flexor carpi radialis (FCR) H-reflex in comparison withRSCAET as an opposite direction of resistance force. Six healthy subjects were randomly assigned two groups: the RSCPDT (n = 3)andRSCAET group (n = 3) groups. Repeated FCR H-reflexes with small M-waves (1 Hz) were sequentially elicited in a row without interval for a period of 220 s. The repeated ANOVA revealed thatneurophysiologicalrebound effects induced by RSCPDT on the FCR H-reflex causea significant initial inhibition phase during RSCPDT and a significant subsequent facilitatory phase after RSCPDTwhen compared toRSCAET. We named those phenomena as remote rebound effects (RRE).These results suggest that the neurophysiological RREof resistive static contractionof pelvic muscles on the FCR H-reflex may depend on the direction of resistance. The RSCPDTis a specific resistive exercise to induce RRE.
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Author(s): Mitsuo Arai and Tomoko Shiratani
FCR H-reflex, rebound remote effect, resistive static contraction,resistic static facilitation, PNF