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Muscle activity during normal walking and its relevance for the functional electrical stimulation applications


S. Mangold, T. Keller, M.R. Popovic

International Workshop on Functional Electrical Stimulation, no. 7, pp. 18-21

Exact knowledge of the temporal pattern of muscle activity during walking is important for a proper sequencing in Functional Electrical Stimulation (FES) supported locomotion. The objective of this study was to give an overview of the EMG activity of functional muscle groups that control movements of the hip, knee, ankle, and subtalar / transverse tarsal joints during normal walking. In literature about 25 important muscles were identified as the muscles that actuate these joints during walking on a plain surface. From the mean EMG profiles of these muscles three ranges of muscle activity 25%-50%, 50%-75%, and 75%-100% of the maximum EMG activity during the stride were extracted. Agonistic muscles were identified and analyzed with respect to their function and estimated activity level during the single gait phase cycle. Seven characteristic muscles for the articulation of the lower limb joints were selected for this presentation. We believe that this information is essential in identifying which muscles and muscle groups have to be stimulated, to which extent, and in which sequence to facilitate dynamic walking.

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% Autogenerated BibTeX entry
@InProceedings { ManKel:2001:IFA_239,
    author={S. Mangold and T. Keller and M.R. Popovic},
    title={{Muscle activity during normal walking and its relevance for
	  the functional electrical stimulation applications}},
    booktitle={International Workshop on Functional Electrical Stimulation},
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