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. 2020 Sep 3;17:121. doi: 10.1186/s12984-020-00738-7

Fig. 6.

Fig. 6

Knee angle profiles averaged for each gait cycle during all four walking conditions in a left leg and b right leg. Average profile over all gait cycles shown in bold for each condition with transparent spread representing ±1 standard deviation. Black bars along horizontal axes show the average gait cycle duration ±1 standard deviation when electrical stimulation was administered in each limb. The average knee angle profile of a healthy gait pattern from a previous study [20] is shown in grey for reference