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. 2018 Jun 27;12:251. doi: 10.3389/fnhum.2018.00251

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Copyright © 2018 Liu, De Macedo and Finley.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Experiment protocol. Participants completed a total of six trials. Participant’s Baseline step length asymmetry was collected during the first 3-min baseline trial without visual feedback. Then, they were instructed to complete a randomized sequence of five 6-min trials with target step length asymmetries of 0%, ±10% and ±15%. During each visual feedback trial, the participant first practiced with feedback for 1 min, then 10 perturbations were randomly applied at foot strike on each side. (B) Visual feedback for three of the five trials of step length asymmetry are shown. (C) Experimental setup. Participant were instructed to walk on the split-belt treadmill. A “success” message would appear on the screen when step length was within the three standard deviations of the desired target.