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. 2018 Oct 2;8:14621. doi: 10.1038/s41598-018-32839-8

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Subject-average angles, moments, and power for left and right hip ab/adduction after ML perturbations. Data is split into sequences, and shown for one gait cycle after perturbation onset at TOR (toe-off right). Subsequent events are P.End (perturbation end), HSR (heel-strike right), TOL (toe-off left), HSL (heel-strike left), and again TOR. The horizontal length of each line in a sequence reflects the duration of that sequence relative to the other conditions. Angles are in radians. Moment and power are dimensionless, with subject average scaling factors of 1215 ± 259 Nm and 2739 ± 562 W, respectively. Colors indicate the perturbation magnitudes. Yellow-red corresponds with outward perturbations, green-blue with inward perturbations. The gray shading is the subject-average standard deviation, only shown for the unperturbed condition to prevent image cluttering. In case of inward perturbations, joint moments and power are left out due to cross-stepping with both feet on the same force plate. Abd: abduction. Add: adduction.