Fig. 2

Color maps depict how the AP-COP position affects the knee extensor moment when combined with the ankle dorsiflexion angle. As shown in the multivariate regression analysis, the knee extensor moment tends to increase as the COP positions posteriorly (a smaller value of AP-COP indicates a more posterior position) along the axis of AP-COP position. Data for the nondominant side are shown. AP-COP anterior–posterior center of pressure