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. 2018 Sep 20;8:14112. doi: 10.1038/s41598-018-32504-0

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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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Foot-placement accuracy. Foot-placement error by target for the consistent environment (a) and variable environment (c) across uncertainty conditions and tasks is shown. Within-trial foot-placement error variability for the consistent environment (b) and between-trial foot-placement error variability for the variable environment (d) across uncertainty conditions and tasks are shown. Data are represented as mean ± SE. **Indicates uncertainty conditions are significantly different from each other (uncertainty main effect: p < 0.05). ***Indicates tasks are significantly different from each other (task main effect: p < 0.05).