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A Review of New Analytic Techniques for Quantifying Symmetry in Locomotion

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Author(s): Elizabeth T. Hsiao-Wecksler | John D. Polk | Karl S. Rosengren | Jacob J. Sosnoff | Sungjin Hong

Journal: Symmetry
ISSN 2073-8994

Volume: 2;
Issue: 2;
Start page: 1135;
Date: 2010;
Original page

Keywords: gait | symmetry | complexity and variability | biomechanics | joint motion | movement analysis | PARAFAC

ABSTRACT
We present a review of novel techniques developed by our research group to improve quantitative assessment of human movement, especially assessments related to symmetric and asymmetric gait patterns. These new methods use motion capture data of the lower limb joints (e.g., joint and body segment angular position and/or velocity, or joint center locations) and include: (1) Regions of Deviation (ROD) analysis, (2) complexity and variability of phase portraits, and (3) multivariate shape-alignment and decomposition. We provide example demonstrations of these techniques using data from infants, typical and atypically developing children, simulated injuries of a knee or ankle, and wheelchair propulsion.
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