Relation between heart rate and VO2 during exercise

Relation between attained heart rate and oxygen uptake during exercise. One metabolic equivalent (MET) is defined as 3.5 mL O₂ uptake/kg per minute. Mean values of approximately 10 METs (Vo₂ 35 mL/kg per minute) can be achieved by nonathletic, healthy, middle-aged men; this should occur at a heart rate of approximately 175 beats/minute.