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. 2017 Oct 14;117(12):2519–2526. doi: 10.1007/s00421-017-3739-1

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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.

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Fig. 2 — Running induced a significant increase in intestinal permeability to iohexol in both study groups (a). Running also increased serum I-FABP concentrations but this increase reached statistical significance only in the asymptomatic group (b). Serum zonulin increased significantly in the asymptomatic group following the run (c). Circles represent baseline values with lines indicating the change from baseline to after run values. n = 9 in the asymptomatic group in all, n = 8 in the symptomatic group in all. *p < 0.05