Fig. 5

Gain and phase on lower extremity channels (B1B2 and B1B3) with various knee joint angles. The solid curves with symbols refer to the y-axis on the left, depict the gain (a for B1B2, b for B1B3) and phase (c for B1B2, d for B1B3). The dotted curves with symbols refer to the y-axis on the right, represent the average of standard deviation from the measurements over 3 days