Morphology of the abdominal muscles in ballet dancers with and without low back pain: a magnetic resonance imaging study

Gildea, Jan E., Hides, Julie A. and Hodges, Paul W. (2013) Morphology of the abdominal muscles in ballet dancers with and without low back pain: a magnetic resonance imaging study. Journal of Science and Medicine in Sport, 17 5: 452-456. doi:10.1016/j.jsams.2013.09.002

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Author Gildea, Jan E.
Hides, Julie A.
Hodges, Paul W.
Title Morphology of the abdominal muscles in ballet dancers with and without low back pain: a magnetic resonance imaging study
Journal name Journal of Science and Medicine in Sport   Check publisher's open access policy
ISSN 1440-2440
1878-1861
Publication date 2013-09-18
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.jsams.2013.09.002
Open Access Status Not yet assessed
Volume 17
Issue 5
Start page 452
End page 456
Total pages 5
Place of publication Chatswood, NSW, Australia
Publisher Elsevier Australia
Language eng
Abstract Objectives: To evaluate the morphology of transversus abdominis and obliquus internus abdominis muscles and the ability to "draw in" the abdominal wall, in professional ballet dancers without low back pain, with low back pain or both hip region and low back pain.
Formatted abstract
Objectives To evaluate the morphology of transversus abdominis and obliquus internus abdominis muscles and the ability to “draw in” the abdominal wall, in professional ballet dancers without low back pain, with low back pain or both hip region and low back pain.

Design Observational study.

Methods Magnetic resonance images of 31 dancers were taken at rest and during voluntary abdominal muscle contraction. Measurements included the thickness of transversus abdominis and obliquus internus abdominis muscles, lateral slide of the anterior extent of the transversus abdominis muscles (transversus abdominis slide) and reduction in total cross sectional area of the trunk.

Results The transversus abdominis and obliquus internus abdominis muscles were thicker in male dancers and the right side was thicker than the left in both genders. There was no difference in muscle thickness as a proportion of the total thickness, between dancers with and without pain, although there was a trend for female dancers with low back pain only to have a smaller change in transversus abdominis muscle thickness with contraction than those without pain. Transversus abdominis slide was less in female dancers than in male dancers. When gender was ignored, the extent of transversus abdominis slide was less in dancers with low back pain only. Reduction in trunk cross sectional area with contraction was not different between genders or groups.

Conclusions This study provides evidence that the abdominal muscles (transversus abdominis and obliquus internus abdominis) are asymmetrical in dancers and although the abdominal muscles are not different in structure (resting thickness) in dancers with LBP, there is preliminary evidence for the behavioural change of reduced slide of transversus abdominis during the ‘draw in’ of the abdominal wall.
Keyword Dance
Lumbar region pain
MRI
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 18 September 2013

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Health and Rehabilitation Sciences Publications
 
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Created: Thu, 20 Mar 2014, 21:29:05 EST by Professor Paul Hodges on behalf of School of Health & Rehabilitation Sciences