Figure 1.

Experimental protocol. We provided online visual feedback to show the position of the ankle markers during swing phase as black dots and a vertical bar on each side, which represented the target step length. Black horizontal lines near the top of each bar in the Baseline asymmetry trial represent the target range which was equal to the standard deviation of the step length measured during baseline. Scores were provided on the top left or right corner of the display to encourage participants to achieve the desired step lengths.