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. 2019 Oct 17;16:119. doi: 10.1186/s12984-019-0601-1

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© The Author(s). 2019

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. 5 — The changes in IMI measure scales in the LCD and the 3D group for each of the 10 sessions. Interpolation with smoothing spline polynomials is presented. The differences between the means of the 1st and 10th session are presented by the Cohen’s U3 index. The polar plot demonstrates that the changes of the IMI measure scales in the LCD group were negative and the in 3D group positive or remain equal