Carbon dioxide^at end expiration-Carbon dioxide^at end expiration+W sub-maximal exercise:PPresDiff:Pt:Exhl gas:Qn
carbon dioxide^at end expiration-carbon dioxide^at end expiration+w sub-maximal exercise:ppresdiff:pt:exhl gas:qn
pCO2 baseline-SubMx Exer delta
pco2 baseline-submx exer delta