Oxygen Uptake

Last Updated: April 29 2017

Oxygen uptake (not to be confused with VO2 max) is the amount of oxygen taken up during exercise, and is known to reflect overall energy expenditure during exercise.

Summary

VO2 stands for ventillary oxygen and represents the amount of oxygen you’re inhaling.

VO2max represents the maximal rate at which you can use oxygen during exercise.

Three things to remember:

VO2max is a common parameter of cardiorespiratory fitness because, as you become fitter, you become better at using oxygen to produce energy (your VO2max increases).

Moreover, exercise intensity is often reported as a percentage of VO2max based on the assumption that more intense exercise requires that you consume more oxygen to fuel your mitochondria (the power generators in your cells).

Nevertheless, higher VO2max doesn’t always translate as better sports performance, because sports often involve moments when energy requirements are so great (the intensity is so high) that oxygen isn’t used to generate the required energy.

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