Varl&bility of "normal index" of EMG activity during gait

The objective of this study was to study the variability of "Normal Index" parameters, defined in an earlier work [ 1 J by the authors, to speed and fatigue. The eIectromyogram (EMG) from the gastrocnemius and the tibialis anterior muscle were measured from a normal healthy subject during level walking on a treadmill. The DC offset in these raw surface EMG signals were eliminated. The power spectrum of the EMG were calculated and the mean power value (MPV) determined for each gait cycle. The results indicated that these parameters do not vary with speed or fatigue for the two muscles studied.

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[3]  R. Shiavi,et al.  Electromyographic gait assessment, Part 1: Adult EMG profiles and walking speed. , 1987, Journal of rehabilitation research and development.