Fig. 5
From: Speed-adaptive control of functional electrical stimulation for dropfoot correction
a Ankle angles (mean ± std) during the gait cycle for nine healthy subjects at 0.9 m/s; b knee angles (mean ± std) during the gait cycle for nine healthy subjects at 0.9 m/s; c ankle angles (mean ± std) during the gait cycle for ten post-stroke subjects at free speed; d knee angles (mean ± std) during the gait cycle for ten post-stroke subjects at free speed