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. 2021 Oct 26;11:21104. doi: 10.1038/s41598-021-00705-9

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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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Footfall-RAC Relative Phase means and standard deviation in the three groups in the three experimental conditions defined by phase (A–K). The letters indicate the significant differences between phases. Note the higher relative phase and the higher variability in SAD group for Footfall-RAC Relative Phase in almost all experimental conditions. It is also possible to identify a trend for a synchronization error/RAC Period dependency.