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. 2019 May 3;16:21. doi: 10.1186/s12970-019-0290-y

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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. 4 — Protein intake negatively correlated with alpha diversity in distance runners. a Protein intake negatively correlated with OTUs (Correlation coefficient: − 0.53, p value: 0.04). b Protein intake negatively correlated with ACE (Correlation coefficient: − 0.51, p-value: 0.05). c Protein intake negatively correlated with Shannon index (Correlation coefficient: − 0.63, p-value: 0.012)