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Hindi Research Article
The Effects of Different Force Directions and Resistance Levels during Unilateral Resistive Static Contraction of the Lower Trunk Muscles on the Ipsilateral Soleus H-reflex in the Side-lying Position
*Corresponding Author: Arai Mitsuo Ph.D, Division of Physical Therapy, Faculty of Health Sciences, Tokyo Metropolitan University, 7-2-10, Higashioku, Arakawa-ku, Tokyo, 116-8551, Japan, Tel: +81-3-3819-1211, Fax: +81-3-3819-1406, Email: arai-mitsuo@tmu.ac.jpReceived Date: Apr 28, 2016 / Accepted Date: May 11, 2016 / Published Date: May 20, 2016
Citation: Mitsuo A, Tomoko S, Hironobu K (2016) The Effects of Different Force Directions and Resistance Levels during Unilateral Resistive Static Contraction of the Lower Trunk Muscles on the Ipsilateral Soleus H-reflex in the Side-lying Position. J Nov Physiother 6:290.DOI: 10.4172/2165-7025.1000290
Copyright: © 2016 Mitsuo A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
| Peer-reviewed Full Article 
Abstract
The objective of this study was to compare the effects of resistive static contraction of the pelvic depressor (RSCPD) with different direction–strength combinations on the H-reflex of the ipsilateral soleus. The participants were 16 normal subjects with a mean (SD) age of 21.6 (0.8) years. The subjects performed RSCPD under four distinct direction–strength combinations (straight-weak, straight-strong, diagonal-weak, and diagonal-strong) in a random order. Three-way analysis of variance of the H/Mmax ratio and Scheffé's post-hoc test revealed that the RSCPD caused an initial reflexive facilitatory phase on the H-reflex of the soleus during RSCPD followed by subsequent gradual inhibitory phases after completion of the RSCPD, excluding the interval 80–100 s after RSCPD. Compared with diagonal-weak RSCPD, neutral-strong RSCPD also significantly influenced the facilitatory effects on the H-reflex of the soleus, reflecting facilitation of the reflex excitability of the motor neurons.
