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. 2018 Dec 17;15:119. doi: 10.1186/s12984-018-0463-y

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© The Author(s) 2018

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License(http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver(http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 6 — OF results. Results related to OF indicators (Onset of Fatigue). Panels a and b show, for each FG subject (panel a) and EG subject (panel b), the values of the three OF indicators: OF_25%,OF_50%,OF_75%, expressed as number of “movements” that satisfy Eq. 3. Grey areas divide the task in three phases. Panel c shows the Gaussian approximation of the probability density functions of the three OF indicators for the FG population (solid lines) and EG population (dashed lines). Panel d shows the mean values and standard errors of the three OF indicators for the FG population (solid line) and the EG population (dashed line)