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. 2022 Oct 15;12(10):975. doi: 10.3390/metabo12100975

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Study design. HRmax: maximal heart rate; RPE: rating of perceived exertion; SpO₂: saturation of percutaneous oxygen; VE: minute ventilation; VO₂: oxygen uptake; VCO₂: carbon dioxide excretion; RER: respiratory exchange ratio, O₂pulse: oxygen pulse; oxhb: oxygenated hemoglobin; dxhb: deoxygenated hemoglobin; tohb: total hemoglobin; StO₂: tissue oxygenated saturation; HR: heart rate; SV: stroke volume; CO: cardiac output; EDV: end-diastolic volume; ESV: end-systolic volume, EF: ejection fraction.