Measure oxygen uptake directly with a metabolic cart during exercise
Use the Fick equation: VO2 = Cardiac Output × (Arterial O2 Content − Venous O2 Content)
Use the ACSM walking equation: VO2 = 0.1 × speed + 1.8 × speed × grade + 3.5
Use the ACSM running equation: VO2 = 0.2 × speed + 0.9 × speed × grade + 3.5
Use the cycling equation: VO2 = 1.8 × work rate / body mass + 7
Convert treadmill speed to meters per minute before using equations
Express VO2 in mL/kg/min
Subtract resting VO2 of 3.5 mL/kg/min when calculating net VO2
Multiply VO2 by body mass to get absolute VO2 in L/min or mL/min
Use exercise test data and prediction equations when direct measurement is not available