Postural recovery following voluntary arm movement is impaired in people with chronic low back pain

Mok, Nicola W., Brauer, Sandra G. and Hodges, Paul W. (2011) Postural recovery following voluntary arm movement is impaired in people with chronic low back pain. Gait and Posture, 34 1: 97-102. doi:10.1016/j.gaitpost.2011.03.021

Author Mok, Nicola W.
Brauer, Sandra G.
Hodges, Paul W.
Title Postural recovery following voluntary arm movement is impaired in people with chronic low back pain
Journal name Gait and Posture   Check publisher's open access policy
ISSN 0966-6362
Publication date 2011-05
Sub-type Article (original research)
DOI 10.1016/j.gaitpost.2011.03.021
Volume 34
Issue 1
Start page 97
End page 102
Total pages 6
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract
Study design: Recovery of postural equilibrium following bilateral voluntary arm movement was evaluated using a case-control study, with 13 subjects with chronic LBP and 13 age- and gendermatched control subjects.

Objectives: To evaluate control of the centre-of-pressure (COP), as a marker of the quality of control of postural equilibrium associated with voluntary arm movements, in people with and without LBP. Summary of background data. When healthy individuals perform rapid voluntary arm movements, small spinal movements (preparatory movement) opposite to the direction of the reactive moments precede voluntary arm movements. Evaluation of trunk movement in people with LBP suggests that this strategy is used infrequently in this population and is associated with an increased spinal displacement following arm flexion. As the preparatory spinal movement was also thought to be an anticipatory mechanism limiting postural perturbation caused by arm movements, we hypothesized that LBP subjects would have compromised control of postural equilibrium following arm flexion.

Methods: Subjects performed bilateral voluntary rapid arm flexion while standing on support surface of different dimensions with eyes opened or closed.

Results: Results indicated that people with LBP consistently took longer to recover postural equilibrium and made more postural adjustments in different stance conditions. However, there was no increase in the excursion of the COP during the recovery period in the LBP group.

Conclusion: These data suggest that while COP is tightly controlled during postural recovery, the finetuning of the control of postural equilibrium is compromised in people with LBP. Postural control dysfunctions should be considered in the management of chronic low back pain.
Keyword Chronic low back pain
Limb movement
Postural control
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: UQ Centre for Clinical Research Publications
Official 2012 Collection
School of Health and Rehabilitation Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 11 times in Scopus Article | Citations
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Created: Fri, 21 Oct 2011, 06:29:06 EST by Associate Professor Sandy Brauer on behalf of UQ Centre for Clinical Research