Figure 1: (a) The experimental procedures. Imagery and execution times were assessed before (T1) and after (T2) the action-observation. (b) During the action-observation, the participants were seated in a relaxed position. The video clips were presented at 0.5× speed on a computer screen. (c) The stepping movements presented in the video clips were shown in a first-person perspective. For the self-observation (SO) condition, participants were presented video clips of their own stepping movements. For the other-observation (OO) condition, participants were presented with clips of others performing the stepping movements. The order of the two conditions was randomized.