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. 2016 Jul 13;13:28. doi: 10.1186/s12970-016-0140-0

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© The Author(s). 2016

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 — Plasma BCAA (a) and tryptophan (b) concentrations and tryptophan/BCAA ratio (c) in the AA and PL trials^a. ^aAA: BCAA, arginine, and citrulline; PL: placebo. (a) Main effects: trial: p < .001; time: p < .001; interaction: p < .001; (b) Main effects: trial: p = .252;time: p = .050; interaction: p = .196; (c) Main effects: trial: p < .001;time: p < .001; interaction: p < .001; ^*Significantly different between the 2 trials (p < .001). ^† Significantly different from the baseline in the AA trial (p < .05)