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. 2017 Sep 1;8:639. doi: 10.3389/fphys.2017.00639

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Copyright © 2017 Sousa, Borrani, Rodríguez and Millet.

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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Representative breath-by-breath and best fit $\overset{\cdot}{V}$ O₂ kinetics curves in weight-related $\overset{\cdot}{V}$ O₂ values (A) and best fit $\overset{\cdot}{V}$ O₂ kinetics curves in percentage of $\overset{\cdot}{V}$ O₂ at the end of the exercise (B) in one subject during cycling (black), swimming (dark gray), and arm cranking (light gray). To remove the influence of the cardiodynamic phase on the subsequent response, the first 20 s of data were excluded from the analysis.