alexa 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
ISSN: 2165-7025

Journal of Novel Physiotherapies
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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

Arai Mitsuo1*, Shiratani Tomoko2 and Kuruma Hironobu2

1Division of Physical Therapy, Tokyo Metropolitan University, Japan

2Division of Physical Therapy, Sonoda Hospital, Japan

*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
E-mail: [email protected]

Received date: April 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.

 

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.

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