Comparison of mean, coefficient of variation, and α values between feedback-controlled and fixed-speed treadmill walking. Mean step time values relate to the left y-axis, while mean step length, width and speed relate to the right y-axis. There were no significant differences in spatiotemporal means between the feedback-controlled and fixed-speed treadmill conditions, except for step width. Both FeedbackTM spatiotemporal variability – except step width – were significantly greater than FixedTM. Except for step width, all the spatiotemporal dynamics were significantly more correlated in the feedback-controlled treadmill conditions compared to fixed-speed.