Results The variance in AP foot placement explained by the CoM states (R2) increased over the single stance phase (Fig. 2, left of the dashed vertical line) and reached values between 50% and 80% during the double stance phase in both normal and slow walking (Fig. 2, right of the dashed vertical line). Regression coefficients for CoM AP velocity were larger than for AP position (Fig. S1). The significance of the correlation coefficients for all 30 participants was also presented in Fig.
