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. 2018 Dec 17;4(1):e000474. doi: 10.1136/bmjsem-2018-000474

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© Author(s) (or their employer(s)) 2018. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/

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Correlation between the face scale rate of perceived exertion and physiological outcomes during the cardiopulmonary exercise tests The scatterplots illustrate the correlation between the face scale rate of perceived exertion and physiological outcomes during cardiopulmonary exercise tests. (A)–(C) show the correlation between the face scale rate of perceived exertion and heart rate, exercise load and oxygen uptake (VO₂) in men, respectively.(D)–(F) show the correlation between the face scale rate of perceived exertion and heart rate, exercise load and oxygen uptake (VO₂) in women, respectively. RPE, ratings of perceived exertion.