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. 2021 Jun 9;11:12133. doi: 10.1038/s41598-021-91683-5

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© The Author(s) 2021

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Floor combinations. (a) Low-friction and (b) high-friction conditions were used in this experiment. Low-friction conditions used only laminated wood flooring, whereas high-friction conditions included a transition from laminated wood flooring to the ceramic tile in the forward walking direction. The flooring and tiles for high-friction conditions were placed alongside the boundaries between the two force plates; the laminated wood flooring on the first force plate, and the ceramic tile on the second, arranged in the forward walking direction.