Index to Chiropractic Literature
Index to Chiropractic Literature
My ICL     Sign In
Monday, October 27, 2025
Index to Chiropractic LiteratureIndex to Chiropractic LiteratureIndex to Chiropractic Literature
Share:

For best results switch to Advanced Search.
Article Detail
 Return to Search Results
Article ID
Title
URL http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Citation&list_uids=16326236
Journal J Manipulative Physiol Ther. 2005 Nov-dec;28(9):667-672
Author(s)
Subject(s)
Peer Review Yes
Publication Type Article
Abstract/Notes OBJECTIVES: The purpose of this study is to assess Hoffman (H) reflex after spinal manipulation (1) as a function of experimental position in healthy subjects and (2) in patients with low back pain.

METHODS: An intervention study was performed to evaluate the effects of sacroiliac (SI) joint manipulation on motoneuron excitability, as measured by the H-reflex. Manual treatment of the SI joint was performed. Hoffman reflex amplitudes before and after SI joint manipulations were measured with subjects lying on the right side (n = 12 healthy subject) or with subjects lying supine (n = 5 healthy subjects), which required turning of subjects onto their sides for SI joint manipulation. Hoffman reflex amplitudes were also measured in 15 patients with low back pain.

RESULTS: No significant changes in H-reflex amplitude in healthy subjects receiving manipulation to the SI joint were observed, provided that H-reflex testing and treatments were performed in the same position, that is, the subject was not moved during the experimental procedure. However, changes in motoneuron excitability after SI joint manipulation were observed in patients with low back pain.

CONCLUSIONS: It appears that H-reflex responses after spinal manipulation are sensitive to movement/repositioning, and that the H-reflex depressions after manipulation documented in previous studies were movement artifacts rather than treatment effects. The relationship between etiology of low back pain and changes in H-reflex amplitude after spinal manipulation is not clear and needs further investigation.

Click on the above link for the PubMed record for this article; full text by subscription. The abstract is reproduced here with the permission of the publisher.
      

Search Tips
  • Enclose phrases in "quotation marks".  Examples: "low back pain", "evidence-based"
  • Retrieve all forms of a word with an "asterisk*", also called a wildcard or truncation.  Example: "chiropract*" retrieves chiropractic, chiropractor, chiropractors
  • Register an account in My ICL to save search histories (My Searches) and collections of records (My Collections)
Advanced Search Tips