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. 2017 May 18;8:15097. doi: 10.1038/ncomms15097

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(a) Schematic of the CPET protocol in humans. Percentage of predicted peak oxygen consumption (b), A_T (c) and percentage of predicted work rate (d) in subjects (n=1,293), stratified by the speed of HRR 1 min after cessation of CPET. Numbers of subjects are shown within bars. Data are presented as means±s.e.m. *P<0.001 (ANOVA).