Abstract
Adding oxygen (O2) to an exercise laboratory at a rate of about 14 liters/min produced an atmosphere with a measurably higher O2 concentration (FO2 ≈ 0.2110) than normal ([FlO2 ] = 0.2093). Assuming FlO2 to be 0.2093 instead of its actual value led us to calculate an erroneously small [vdot]O2 consumption ([vdot]O2).