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. 2017 Jun 26;14:62. doi: 10.1186/s12984-017-0267-5

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© The Author(s). 2017

Open AccessThis 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. 3 — Change in metabolic rate versus negative exosuit bilateral ankle work rate. a Individual data. Colors are different participants. b Average for each condition. Error bars are s.e.m. Percentages are percent metabolic reduction. Dashed black line indicates linear fit from mixed-model ANOVA. Dashed grey line indicates expected trend assuming exosuit positive and negative work efficiencies corresponding to the reported efficiency of biological muscles [23]. Brackets indicate pairwise differences versus Powered-Off. Black dot represents Powered-Off. ** is p ≤ 0.01, * is p ≤ 0.05