How to Measure Cardiorespiratory Fitness
Cardiorespiratory fitness is measured through vo2max testing. vo2max is essentially a measurement of the maximum amount of oxygen that your body is capable of consuming lo generate energy that can be used at the cellular level. If you are unfamiliar with the concept of vo2max and how it is measured you can read about it in our vo2 and VO2max article The gold standard by which cardiorespiratory fitness is measured requires a vo2max test under laboratory controlled settings with sophisticated equipment. However, if you don't have access to a laboratory equipped for vo2max measurement it is still possible to make a very reasonable estimate of your personal vo2max by trying any one of the four calculators provided on our max calculator page.