Movement of the lumbar spine is critical for maintenance of postural recovery following support surface perturbation

Mok, Nicola W. and Hodges, Paul W. (2013) Movement of the lumbar spine is critical for maintenance of postural recovery following support surface perturbation. Experimental Brain Research, 231 3: 305-313. doi:10.1007/s00221-013-3692-0


Author Mok, Nicola W.
Hodges, Paul W.
Title Movement of the lumbar spine is critical for maintenance of postural recovery following support surface perturbation
Journal name Experimental Brain Research   Check publisher's open access policy
ISSN 0014-4819
1432-1106
Publication date 2013-11
Year available 2013
Sub-type Article (original research)
DOI 10.1007/s00221-013-3692-0
Volume 231
Issue 3
Start page 305
End page 313
Total pages 9
Place of publication Heidelberg, Germany
Publisher Springer
Collection year 2014
Language eng
Formatted abstract
Repeated measures design. This study examined recovery of postural equilibrium (centre of pressure (COP) excursion, time to recover balance, and the number of postural adjustments) following unexpected support surface perturbation in healthy participants with and without a rigid lumbar corset to reduce lumbar motion. Lumbar spine movement is thought to aid postural stability, especially when a “hip” (lumbopelvic) strategy is required, such as in response to large and fast perturbations. Delayed onset of lumbar spine movement in association with prolonged postural recovery in chronic low back pain implies reduced spinal motion could underpin balance deficits in this group. However, other explanations such as poor proprioception cannot be excluded, and the relationship between lumbar movement and postural stability remains unclear. We hypothesized restricted lumbar spine movement would impair control of postural recovery following support surface perturbation. Participants regained postural stability following unexpected support surface perturbations in different directions (forward and backward), with different amplitudes (small, medium, and large), with and without restriction of spine motion by a hard lumbar corset. Although the latency of the postural adjustment was unaffected by the corset, the quality of postural recovery was compromised (increased COP range, time taken for postural recovery, and number of postural adjustments) during recovery, especially in response to large perturbation. Restriction of lumbar spine movement adversely affects postural recovery. The results suggest movement of the lumbar spine, although small in amplitude, is critical for efficient recovery of standing balance.
Keyword Postural control
Stability
Equilibrium
Spine movement
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Health and Rehabilitation Sciences Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
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