Altered trapezius muscle behavior in individuals with neck pain and clinical signs of scapular dysfunction

Zakharova-Luneva, Evgeniya, Jull, Gwendolen, Johnston, Venerina and O'Leary, Shaun (2012) Altered trapezius muscle behavior in individuals with neck pain and clinical signs of scapular dysfunction. Journal of Manipulative and Physiological Therapeutics, 35 5: 346-353. doi:10.1016/j.jmpt.2012.04.011


Author Zakharova-Luneva, Evgeniya
Jull, Gwendolen
Johnston, Venerina
O'Leary, Shaun
Title Altered trapezius muscle behavior in individuals with neck pain and clinical signs of scapular dysfunction
Journal name Journal of Manipulative and Physiological Therapeutics   Check publisher's open access policy
ISSN 0161-4754
1532-6586
Publication date 2012-06
Sub-type Article (original research)
DOI 10.1016/j.jmpt.2012.04.011
Volume 35
Issue 5
Start page 346
End page 353
Total pages 8
Place of publication Philadelphia, PA, United States
Publisher Mosby
Collection year 2013
Language eng
Formatted abstract Objective: The purpose of this study was to compare the behavior of the trapezius muscle in patients with chronic mechanical neck pain (MNP) and clinical signs of scapula dysfunction to healthy controls.
Methods: This is a cross-sectional, between-participant study of trapezius muscle behavior. Eighteen volunteers with chronic MNP and 20 healthy controls participated in the study. Participants performed isometric shoulder abduction, external rotation, and flexion at 3 intensities of effort (maximum voluntary contraction [MVC], 50% MVC, and 20% MVC). Electromyographic signals were recorded unilaterally from the upper, middle, and lower portions of the trapezius muscle during isometric shoulder contractions.
Results: Significantly greater levels of lower trapezius electromyographic signals were observed in patients with MNP compared with controls for the abduction (P < .027) and external rotation (P < .036) conditions but not for the flexion condition (P > .392). No differences in activity were observed in the upper (P > .248) or middle (P > .052) portions of trapezius between groups during any of the isometric shoulder girdle conditions.
Conclusions: These findings represent a change in the behavior of the lower trapezius muscle in individuals with MNP who exhibit clinical signs of scapular dysfunction. Clinicians should consider the potential involvement of the axioscapular muscles when assessing patients with chronic neck pain, as retraining scapular function may be required for the successful management of these patients.
Keyword Neck pain
Scapula
Neck muscles
Electromyography
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Health and Rehabilitation Sciences Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 8 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Access Statistics: 77 Abstract Views  -  Detailed Statistics
Created: Fri, 17 Aug 2012, 18:20:34 EST by System User on behalf of Physiotherapy