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What is VO2 max?

Marjorie Nolan Cohn
Nutrition & Dietetics

VO2max is the maximal oxygen consumption or uptake. It's the most relevant measure of the cardiorespiratory system. It's the highest rate at which oxygen can be consumed, distributed and used by the body during exercise. It is determined relative to body weight as millimeters of oxygen per kilogram of body weight.

Dr. Vonda Wright, MD
Orthopedic Surgery
VO2 max is the maximum volume (V) of oxygen (O2) available for energy production via the oxidative pathway (the highly efficient system of metabolism in which energy is produced). VO2 max is dependent upon your heart rate, cardiac output (how much blood comes out of your heart with each contraction), and tissue oxygen uptake. Reductions in VO2 max are believed to be the primary reason for a decline in functional endurance with aging.
Fitness After 40: How to Stay Strong at Any Age

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Fitness After 40: How to Stay Strong at Any Age

It's one of the undeniable facts of life. After we reach a certain age, our bodies change. No matter how fit we may have been at 20, we're very different people after 40. But growing older doesn't...
VO2 max is also called maximal oxygen consumption. It is a measure of the maximum intensity at which the body is able to efficiently utilize oxygen.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.