Figure 5

Surface EMG signals of BF and RF muscles during walking on a treadmill with a gait cycles. (a) RMS sEMG of RF with three conditions; (b) RMS sEMG of BF with three conditions; (c) IEMG of RF and BF muscles with three conditions; and (d) AEMG of RF and BF muscles with three conditions. The shaded area represent the standard deviation.