Trunk rotational strength asymmetry in adolescents with idiopathic scoliosis: an observational study

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dc.contributor.author Kevin McIntire en_US
dc.contributor.author Marc Asher en_US
dc.contributor.author Douglas Burton en_US
dc.contributor.author Wen Liu en_US
dc.date.accessioned 2009-05-05T19:40:16Z
dc.date.available 2007 - en_US
dc.date.available 2009-05-05T19:40:16Z
dc.date.issued 2006-03-31 en_US
dc.identifier.citation Kevin McIntire;Marc Asher;Douglas Burton;Wen Liu: Trunk rotational strength asymmetry in adolescents with idiopathic scoliosis: an observational study. Scoliosis 2007, 2(1):9. en_US
dc.identifier.uri http://www.scoliosisjournal.com/content/2/1/9 en_US
dc.identifier.uri http://hdl.handle.net/2271/639
dc.description.abstract BACKGROUND:Recent reports have suggested a rotational strength weakness in rotations to the concave side in patients with idiopathic scoliosis. There have been no studies presenting normative values of female adolescent trunk rotational strength to which a comparison of female adolescents with idiopathic scoliosis could be made. The purpose of this study was to determine trunk rotational strength asymmetry in a group of female adolescents with AIS and a comparison group of healthy female adolescents without scoliosis.METHODS:Twenty-six healthy adolescent females served as the healthy group (HG) (average age 14 years) and fourteen otherwise healthy adolescent females with idiopathic scoliosis served as the idiopathic scoliosis group (ISG) (average age 13.5 years, average Cobb 28°). Participant's isometric trunk rotational strength was measured in five randomly ordered trunk positions: neutral, 18° and 36° of right and left pre-rotation. Rotational strength asymmetry was compared within each group and between the two groups using several different measures.RESULTS:The HG showed strength asymmetry in the 36° pre-rotated trunk positions when rotating towards the midline (p < 0.05). The ISG showed strength asymmetry when rotating towards the concavity of their primary curve from the neutral position (p < 0.05) and when rotating towards the concavity from the 18° (p < 0.05) and 36° (p < 0.05) concave pre-rotated positions. The ISG is significantly weaker than the HG when rotating away from the midline toward the concave (ISG)-left (HG) side from the concave/left pre-rotated 18° (p < 0.05) and 36° (p < 0.05) positions.CONCLUSION:The AIS females were found to be significantly weaker when contracting toward their main curve concavity in the neutral and concave pre-rotated positions compared to contractions toward the convexity. These weaknesses were also demonstrated when compared to the group of healthy female adolescent controls. Possible mechanisms for the strength asymmetry in ISG are discussed. en_US
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dc.format.extent 12055 bytes
dc.format.extent 14320 bytes
dc.format.extent 43 bytes
dc.format.mimetype application/pdf
dc.format.mimetype text/plain
dc.format.mimetype application/octet-stream
dc.format.mimetype application/octet-stream
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dc.language en en_US
dc.language.iso en_US
dc.publisher BioMedCentral en_US
dc.relation.ispartof 1748-7161 en_US
dc.relation.hasversion http://www.biomedcentral.com/content/pdf/1748-7161-2-9.pdf en_US
dc.rights This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. en_US
dc.rights.uri http://creativecommons.org/licenses/by/2.0 en_US
dc.title Trunk rotational strength asymmetry in adolescents with idiopathic scoliosis: an observational study en_US
dc.type article en_US
dc.date.captured 2009-04-27 en_US
dc.identifier.doi doi:10.1186/1748-7161-2-9 en_US
dc.identifier.pmid 16759428 en_US

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This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Except where otherwise noted, this item's license is described as This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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