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. 2018 Oct 22;15:50. doi: 10.1186/s12970-018-0257-4

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© The Author(s). 2018

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. 6 — Effect of GMCT supplementation on free testosterone level in the circulation of resistance-trained participants. a Bars represent mean ± SD of free testosterone concentrations in placebo (n = 15) and GMCT (n = 16) groups at baseline and post-intervention. b Bars represent mean ± SD of changes from baseline free testosterone concentrations in placebo and GMCT groups at post-intervention. * indicates significance in an unpaired t-test