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. 2015 Oct 30;6:308. doi: 10.3389/fphys.2015.00308

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Copyright © 2015 Garcia-Tabar, Eclache, Aramendi and Gorostiaga.

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) or licensor 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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Average and individual time course of the fractional concentrations of oxygen (FO₂) during recovery after maximal exercise. The post-test verification values read by the gas analyzers using the room air (A) and the tank gas (B) were measured at 20 s, 3, 5, 10, 15, 20, and 30 min of recovery. The number of observations made at each time-point was 9. ^***Significantly different from pre-test (P < 0.001); ^**Significantly different from pre-test (P < 0.01); ^*Significantly different form pre-test (P < 0.05).