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The patterns of changes in the electromyographic profile of muscles in some gait disorders

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Abstract

Electromyograms (EMGs) of subjects with different gait pathologies have been used to analyze the most typical forms of transformation of the muscle EMG profile: (1) a decrease in the muscle electrical activity during a locomotor cycle, either uniform or with a predominant reduction in the region of maximum values (the Mx zone); the former variant is characteristic of structural damage to nerves and muscles, whereas the latter variant is of functional origin because it is related to the alterations in the biomechanical conditions of muscle work during walking; (2) an increase in muscle electrical activity during the cycle, its maxima being prolonged from the Mx zone to the zone of moderate activity (the Md zone); and (3) a complete shift of the activity peaks to another phase of the cycle, usually from the Mx to the Md zone. It has been assumed that all forms of the transformation of the muscle EMG profile except a drastic uniform decrease in activity on damage to nerve and muscle structures are of afferent origin. These types of alterations in the EMG profile are accounted for by disturbance of the biomechanical conditions of muscle activity, such as an increased or decreased muscle load.

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Authors and Affiliations

  1. Federal Bureau of Medical Social Expertise, Ministry of Health and Social Development of the Russian Federation, Moscow, Russia

    K. A. Petrushanskaya & A. S. Vitenzon

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  1. K. A. Petrushanskaya
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  2. A. S. Vitenzon
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Original Russian Text © K.A. Petrushanskaya, A.S. Vitenzon, 2006, published in Fiziologiya Cheloveka, 2006, Vol. 32, No. 6, pp. 52–60.

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Petrushanskaya, K.A., Vitenzon, A.S. The patterns of changes in the electromyographic profile of muscles in some gait disorders. Hum Physiol 32, 676–683 (2006). https://doi.org/10.1134/S0362119706060090

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