Trunk dynamics are impaired in ballet dancers with back pain but improve with imagery

Gildea, Jan E., van den Hoorn, Wolbert, Hides, Julie A. and Hodges, Paul W. (2014) Trunk dynamics are impaired in ballet dancers with back pain but improve with imagery. Medicine and Science in Sports and Exercise, 47 8: 1665-1671. doi:10.1249/MSS.0000000000000594


Author Gildea, Jan E.
van den Hoorn, Wolbert
Hides, Julie A.
Hodges, Paul W.
Title Trunk dynamics are impaired in ballet dancers with back pain but improve with imagery
Journal name Medicine and Science in Sports and Exercise   Check publisher's open access policy
ISSN 1530-0315
0195-9131
Publication date 2014-12-09
Year available 2014
Sub-type Article (original research)
DOI 10.1249/MSS.0000000000000594
Open Access Status
Volume 47
Issue 8
Start page 1665
End page 1671
Total pages 28
Place of publication Philadelphia PA, United States
Publisher Lippincott Williams and Wilkins
Collection year 2015
Language eng
Abstract Purpose: Trunk control is essential in ballet and may be compromised in dancers with a history low back pain (LBP) by associated changes in motor control. This study aimed to compare trunk mechanical properties between professional ballet dancers with and without a history of LBP. As a secondary aim we assessed whether asking dancers to use motor imagery to respond in a "fluid" manner could change the mechanical properties of the trunk, and whether this was possible for both groups. Methods: Trunk mechanical properties of stiffness and damping were estimated with a linear second order system, from trunk movement in response to perturbations, in professional ballet dancers with (n=22) and without (n=8) a history of LBP. The second order model adequately described trunk movement in response to the perturbations. Trials were performed with and without motor imagery to respond in a "fluid" manner to the perturbation. Results: Dancers with a history of LBP had lower damping than dancers without LBP during the standard condition (P=0.002) but had greater damping during the "fluid" condition (P<0.001) with values similar to dancers without LBP (P=0.226). Damping in dancers without LBP was similar between the conditions (P>0.99). Stiffness was not different between dancers with and without a history of LBP (P=0.252) but was less during the "fluid" condition than the standard condition (P<0.001). Conclusion: Although dancers with a history of LBP have less trunk damping than those without LBP, they have the capacity to modulate the trunk's mechanical properties to match that of pain-free dancers by increasing damping with motor imagery. These observations have potential relevance for LBP recurrence and rehabilitation.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Health and Rehabilitation Sciences Publications
 
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