Figure 2.
Mediolateral component of ground reaction force as a percentage of body weight at four walking speeds, averaged over eight unimpaired subjects. The left panel shows a brief laterally directed ground reaction force in early stance followed by a medially directed ground reaction force. The right panel shows the peak ground reaction forces during three time periods (0-6%, 14-30%, and 40-56% gait cycle). Error bars span ± one standard deviation. Arrow indicates significant effect of speed on mediolateral ground reaction force.