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. 2017 Jan 24;18:41. doi: 10.1186/s13063-016-1769-3

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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. 4 — SPIRIT figure presenting an overview of the tests, questionnaires, and other methods employed at different time points in the study. ¹If participants are assigned to one of the conditions receiving a NIRS-based NF training. ²If participants are assigned to the condition receiving an EMG-based BF training. ³These tests/questionnaires were developed in the departments of the authors of this study. *Data collection requires medication washout