Fig. 3
From: Novel velocity estimation for symmetric and asymmetric self-paced treadmill training
Target velocity error during self-paced trials for the three tested velocities. a Walking velocity (normalized to Froude number) for 8 subjects at the three target velocities. The average number of steps taken to reach a steady walking speed were: 13, 14, and 21 at the three speeds respectively. b Distribution plots of the percentage error between target and subject walking velocities calculated in standard units (m/s). Across subjects, the inter-quartile range of the error included zero for the three tested velocities