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. 2014 Jan 31;9(1):e81850. doi: 10.1371/journal.pone.0081850

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© 2014 Hatamoto et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Relationship between turn frequency and oxygen consumption (A), heart rate (B), and RPE (C), while running at different velocities. HR, heart rate; RPE, rating of perceived exertion; VO_2, gross oxygen consumption.