Figure 3
From: Adaptive locomotion during subtle environmental changes in younger and older adults

Schematic illustration of the obstacle avoidance task. (i) Participants walked down the pathway at a self-selected stride and stepped over the obstacle four consecutive times (i.e., baseline trial); (ii) an experimenter then covertly switched the obstacle to the test obstacle (i.e., 135 mm or 165 mm height obstacle) according to the participants’ allocation when another experimenter measured the length of lower limb of the participants where they could not see the obstacle; (iii) finally, participants were asked to step over the obstacle again as a test trial.