
Keywords: A-VO2; tissue oxygen extraction (A-VO2 = CaO2 â CvO2); CaO2; arterial blood oxygen content; CvO2; venous blood oxygen content; COT; cost of transport (COT = á¹O2 / (U Ã 60)); COTnet; net cost of transport (COTnet = (á¹O2 â á¹O2rest)Â