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    Effect of Parkinson's Disease on the Step Response to a Backwards Pull

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    umi-ku-2298_1.pdf (2.443Mb)
    Issue Date
    2007-12-12
    Author
    McVey, Molly Ann
    Publisher
    University of Kansas
    Format
    147 pages
    Type
    Thesis
    Degree Level
    M.S.
    Discipline
    Mechanical Engineering
    Rights
    This item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
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    Abstract
    This study was designed to identify parameters of balance recovery that are sensitive to postural instability early in the progression of Parkinson's disease. The response to a backwards pull was analyzed in a group of healthy controls and a group of adults diagnosed with mild Parkinson's disease (H&Y 2). Video, motion, EMG, and force plate data were analyzed to determine differences in strategy, temporal, kinematic, kinetic, and center of pressure parameters for the first step in the response. In the PD group, subjects were less consistent in their choice of stepping limb over multiple trials, had a longer weight shift time, and showed different motion at the ankle joint prior to liftoff. In addition, the center of pressure was further posterior at landing in the PD group. These results suggest that further investigation focused on the movement preparation stage may be able to identify early markers of postural instability.
    URI
    http://hdl.handle.net/1808/1972
    Collections
    • Engineering Dissertations and Theses [705]
    • Theses [3710]

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    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
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    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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