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. 2019 May 16;10:539. doi: 10.3389/fphys.2019.00539

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Copyright © 2019 Kirby, Lucas and Lucas.

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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Distance cycled (left) and mean power output (right) during time trials in hot conditions (35°C, 30% RH) performed pre-acclimation (HTT1), following 4-days heat acclimation (HTT2), and following 9-days heat acclimation (HTT3). Bars represent mean value and black lines represent individual participant data. ^∗Significant increase from HTT1 (p < 0.05); ^†Significant increase from HTT2 (p < 0.05).