ORCiD
Preeti Oza: 0000-0002-5553-6158
Document Type
Article
Publication Title
Rehabilitation Research and Practice
ISSN
2090-2867
Volume
2017
DOI
10.1155/2017/5107097
First Page
1
Last Page
6
Publication Date
1-1-2017
Abstract
Depression of the Hoffman reflex (H-reflex) is used to examine spinal control mechanisms during exercise, fatigue, and vibration and in response to training. H-reflex depression protocols frequently use trains of stimuli; this is time-consuming and prevents instantaneous assessment of motor neuronal excitability. The purpose of this study was to determine if paired-pulse H-reflex depression is reproducible and whether paired-pulse stimulation adequately estimates the depression induced by the more traditional ten-pulse train. H-reflexes were elicited via ten-pulse trains at 0.1, 0.2, 1, 2, and 5 Hz in ten neurologically intact individuals on two separate days. We measured the depression elicited by the second pulse (H2) and the mean depression elicited by pulses 2–10 (Hmean). H2 was consistent at all frequencies on both days (r2 = 0.97, p < 0.05 , and ICC(3,1) = 0.81). H2 did not differ from Hmean (p < 0.05). The results indicate that paired-pulse H-reflex depression has high between-day reliability and yields depression estimates that are comparable to those obtained via ten-pulse trains. Paired-pulse H-reflex depression may be especially useful for studies that require rapid assessment of motor neuronal excitability, such as during exercise, fatigue, and vibration, or to establish recovery curves following inhibition.
Recommended Citation
Oza, P. D.,
Dudley-Javoroski, S.,
&
Shields, R. K.
(2017).
Modulation of H-reflex depression with paired-pulse stimulation in healthy active humans.
Rehabilitation Research and Practice, 2017, 1–6.
DOI: 10.1155/2017/5107097
https://scholarlycommons.pacific.edu/phs-facarticles/340
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Comments
Copyright © 2017 Preeti D. Oza et al. This is an open access article distributed under the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.