Cranio-cervical flexor muscle impairment at maximal, moderate, and low loads is a feature of neck pain

O'Leary, Shaun, Jull, Gwendolen, Kim, Mehwa and Vicenzino, Bill (2007) Cranio-cervical flexor muscle impairment at maximal, moderate, and low loads is a feature of neck pain. Manual Therapy, 12 1: 34-39. doi:10.1016/j.math.2006.02.010


Author O'Leary, Shaun
Jull, Gwendolen
Kim, Mehwa
Vicenzino, Bill
Title Cranio-cervical flexor muscle impairment at maximal, moderate, and low loads is a feature of neck pain
Journal name Manual Therapy   Check publisher's open access policy
ISSN 1356-689X
Publication date 2007-02
Year available 2006
Sub-type Article (original research)
DOI 10.1016/j.math.2006.02.010
Volume 12
Issue 1
Start page 34
End page 39
Total pages 6
Editor Ann Moore
Gwendolen A Jull
Place of publication Edinburgh, Scotland
Publisher Churchill Livingstone
Collection year 2008
Language eng
Subject 321017 Orthopaedics
321024 Rehabilitation and Therapy - Occupational and Physical
321403 Motor Control
730303 Occupational, speech and physiotherapy
C1
Abstract Impairment of the cranio-cervical flexor (CCF) muscles is a feature of painful cervical spine disorders. The aim of this study was to investigate if CCF muscle impairment is present over a range of contraction intensities (maximal, moderate, low) in neck pain sufferers compared to individuals with no history of neck pain. Isometric CCF muscle strength (isometric maximal voluntary contraction (MVC)), and endurance at moderate (50% of MVC), and low (20% of MVC) loads was compared in 46 participants with neck pain (Neck Disability Index (NDI): mean +/- SD; 22.8 +/- 5.2) and 47 control participants (NDI: 2.6 +/- 2.6). Compared to the control group, the neck pain group had a significant deficit (15.9%, P = 0.037) in their MVC peak torque recordings, as well as a significantly reduced capacity to sustain isometric CCF muscle contractions to task failure at 20% of MVC (35% deficit, P = 0.03) and 50% of MVC (27% deficit, P = 0.002). Neck pain participants also demonstrated poorer accuracy in maintaining their MVC20 contraction at the nominated isometric CCF torque amplitude (P = 0.02), compared to control participants. It would appear that impairment in isometric CCF muscle performance exists over a range of contraction intensities in neck pain sufferers, which may benefit from specific therapeutic intervention. (c) 2006 Elsevier Ltd. All rights reserved.
Keyword Rehabilitation
Cranio-cervical Flexor Muscles
Neck Pain
Dynamometry
Cervical-spine
Electromyographic Activity
Strength
Performance
Headache
Specificity
Dysfunction
Whiplash
Therapy
Flexion
Q-Index Code C1
Q-Index Status Confirmed Code
Additional Notes Available online 13 June 2006

 
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Created: Mon, 18 Feb 2008, 16:29:20 EST