Development of a cost effective three-dimensional posture analysis tool : validity and reliability

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dc.contributor.authorBrink, Yolandi
dc.contributor.authorLouw, Quinette
dc.contributor.authorGrimmer, Karen
dc.contributor.authorSchreve, Kristiaan
dc.contributor.authorVan der Westhuizen, Gareth
dc.contributor.authorJordaan, Esme
dc.date.accessioned2014-02-07T12:21:49Z
dc.date.available2014-02-07T12:21:49Z
dc.date.issued2013-12
dc.descriptionPublication of this article was funded by the Stellenbosch University Open Access Fund.en_ZA
dc.descriptionThe original publication is available at http://www.biomedcentral.com/1471-2474/14/335en_ZA
dc.descriptionCITATION: Brink, Y. et al. 2013. Development of a cost effective three-dimensional posture analysis tool: validity and reliability. BMC Musculoskeletal Disorders, 14:335, doi:10.1186/1471-2474-14-335.en_ZA
dc.description.abstractBackground: The lack of clear understanding of the association between sitting posture and adolescent musculoskeletal pain, might reflect invalid and/or unreliable posture measurement instruments. The psychometric properties of any new measurement instrument should be demonstrated prior to use for research or clinical purposes. This paper describes psychometric testing of a new three-dimensional (3D), portable, non-invasive posture analysis tool (3D-PAT), from sequential studies using a mannequin and high school students. Methods: The first study compared the 3D-(X-, Y- and Z-) coordinates of reflective markers placed on a mannequin using the 3D-PAT, and the Vicon motion analysis system. This study also tested the reliability of taking repeated measures of the 3D-coordinates of the reflective markers. The second study determined the concurrent validity and test-retest reliability of the 3D-PAT measurements of nine sitting postural angles of high school students undertaking a standard computing task. In both studies, concordance correlation coefficients and Intraclass correlation coefficients described test-retest reliability, whilst Pearson product moment correlation coefficients and Bland-Altman plots demonstrated concurrent validity. Results: The 3D-PAT provides reliable and valid 3D measurements of five of the nine postural angles i.e. head flexion, neck flexion, cranio-cervical angle, trunk flexion and head lateral bending in adolescents undertaking a standard task. Conclusions: The 3D-PAT is appropriate for research and clinical settings to measure five upper quadrant postural angles in three dimensions. As a measurement instrument it can provide further understanding of the relationship between sitting posture, changes to sitting posture and adolescent musculoskeletal pain.en_ZA
dc.description.sponsorshipStellenbosch Universityen_ZA
dc.description.versionPublishers' versionen_ZA
dc.format.extent10 p. : ill.
dc.identifier.citationBrink, Y. et al. 2013. Development of a cost effective three-dimensional posture analysis tool: validity and reliability. BMC Musculoskeletal Disorders, 14:335, doi:10.1186/1471-2474-14-335.en_ZA
dc.identifier.issn1471-2474 (print)
dc.identifier.issn1471-2474 (online)
dc.identifier.otherdoi:10.1186/1471-2474-14-335
dc.identifier.urihttp://hdl.handle.net/10019.1/86125
dc.language.isoen_ZAen_ZA
dc.publisherBioMed Centralen_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectPostureen_ZA
dc.subjectPosture disordersen_ZA
dc.titleDevelopment of a cost effective three-dimensional posture analysis tool : validity and reliabilityen_ZA
dc.typeArticleen_ZA
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