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The Gait Profile Score and Movement Analysis Profile

Baker, RJ, McGinley, J.L., Schwartz, M.H., Beynon, S, Rozumalski, A, Graham, H.K. and Tirosh, O 2009, 'The Gait Profile Score and Movement Analysis Profile' , Gait & Posture, 30 (3) , pp. 265-269.

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    Abstract

    The GaitDeviation Index (GDI) has been proposed as an index of overall gait pathology. This study proposes an interpretation of the difference measure upon which the GDI is based, which naturally leads to the definition of a similar index, the Gait Profile Score (GPS). The GPS can be calculated independently of the feature analysis upon which the GDI is based. Understanding what the underlying difference measure represents also suggests that reporting a raw score, as the GPS does, may have advantages over the logarithmic transformation and z-scaling incorporated in the GDI. It also leads to the concept of a Movement Analysis Profile(MAP) to summarisemuch of the information contained within kinematic data. A validation study on all children attending a paediatric gait analysis service over 3 years (407 children) provides evidence to support the use of the GPS through analysis of its frequency distribution across different Gross Motor Function Classification System(GMFCS) and Gillette Functional Assessment Questionnaire (FAQ) categories, investigation of intra-session variability, and correlation with the square root of GGI. Correlation with GDI confirms the strong relationship between the two measures. The study concludes that GDI and GPS are alternative and closely related measures. The GDI has prior art and is particularly useful in applications arising out of feature analysis such as cluster analysis or subject matching. The GPS will be easier to calculate for new models where a large reference dataset is not available and in association with applications using the MAP.

    Item Type: Article
    Themes: Health and Wellbeing
    Schools: Colleges and Schools > College of Health & Social Care
    Colleges and Schools > College of Health & Social Care > School of Health Sciences
    Journal or Publication Title: Gait & Posture
    Publisher: Elsevier
    Refereed: Yes
    ISSN: 09666362
    Depositing User: RH Shuttleworth
    Date Deposited: 11 May 2011 11:10
    Last Modified: 20 Aug 2013 17:51
    URI: http://usir.salford.ac.uk/id/eprint/15745

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