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Indices of co-contraction using EMG

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  • Indices of co-contraction using EMG

    I have been asked to assist a colleague in quantifying the degree of
    agonist/antagonist co-contraction during walking gait using surface EMG.
    In a quick review of the relevant literature, I have encountered a number
    of different techniques for quantifying such indices of co-contraction. I
    have two questions for members who may have greater experience in such
    matters:

    1) Which indices have been found to be most useful and/or most meaningful?
    Please include references to the published literature if available.

    2) Since any index of co-contraction will involve EMG signals from at least
    two muscles, does normalization of the EMG magnitude present a special
    problem? If so, which normalization techniques have been found to be most
    effective in minimizing this problem?

    As always, I will post a summary of the replies. Thanks in advance

    Peter
    _______________________________________
    Peter F. Vint, Ph.D.
    237 K HHP Building
    Department of Exercise and Sport Science
    University of North Carolina at Greensboro
    Greensboro, NC 27455
    e-mail: pfvint@homans.uncg.edu
    phone: (910) 334-3274
    fax: (910) 334-3238


    _______________________________________
    Peter F. Vint, Ph.D.
    237 K HHP Building
    Department of Exercise and Sport Science
    University of North Carolina at Greensboro
    Greensboro, NC 27455
    e-mail: pfvint@homans.uncg.edu
    phone: (910) 334-3274
    fax: (910) 334-3238
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