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    Whole body vibration alters proprioception in the trunk

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    LiLamisWilsonpaper_IJIE_scholar.pdf (633.8Kb)
    Issue Date
    2008
    Author
    Li, Lu
    Lamis, Farhana
    Wilson, Sara E.
    Publisher
    Elsevier
    Type
    Article
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    Abstract
    Occupational whole body vibration has long been associated with low back injuries. However, the mechanism of these injuries is not well understood. In this paper, the effect of whole body vibration on proprioception and dynamic stability was examined. Subjects exposed to 20 minutes of vertical, seated, whole body vibration were found to have a 1.58 fold increase in position sense errors after vibration relative to controls exposed to 20 minutes of the same seated posture without vibration exposure. To understand the potential effect of a sensory loss on dynamic low back stability a lumped parameter model of the trunk and neuromotor response was created. Using this model, an increase in the threshold of the sensory system was predicted to increase trunk flexion and delay neuromotor response with a sudden, unexpected perturbation. These predictions were demonstrated in a second experiment where subjects exhibited both an 11.9% increase in trunk flexion and an 11.2% increase in time to peak paraspinal muscle response (measured using integrated electromyographic activity) after exposure to 20 minutes of vertical, seated, whole body vibration.
    URI
    http://hdl.handle.net/1808/4306
    Collections
    • Bioengineering Program Scholarly Works [144]
    • Mechanical Engineering Scholarly Works [135]
    Citation
    International Journal of Industrial Ergonomics 38(9-10), pp. 792-800, 2008

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    KU Libraries
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    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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