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. 2020 Sep 4;11:1006. doi: 10.3389/fphys.2020.01006

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Copyright © 2020 Kartaram, van Norren, Schoen, Teunis, Mensink, Verschuren, M’Rabet, Besseling-van der Vaart, Mohrmann, Wittink, Garssen, Witkamp and Pieters.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Subjects rating for perceived exertion (RPE) on the Borg scale (0–20) for every 15 min during exercise (15, 30, 45 min) and at the end of exercise (60 min). Perceived exertion was rated for all exercise protocols: high intensity exercise at 70% W_max in hydrated and dehydrated condition, intermittent high intensity exercise in blocks of 2 min at 55/85% W_max and moderate exercise at 50% W_max. Statistical analysis showed significant overall effects of timepoints and protocols on rpe (p < 0.001) as well as a significant interaction (p < 0.001).