In light of Chris Froome releasing some of his physiological-testing data, many cycling fans are wondering what the VO2 Max metric actually refers to. Simply put, VO2 Max is a measurement of how much oxygen your body can use at maximal sustained output.
“The more oxygen your body can absorb the more power output it can make. Simple as that,” said professional cycling coach Frank Overton.
VO2 Max numbers range roughly from 40-90, with that number being milliliters of oxygen per kilogram of body weight per minute, or ml/kg/min.
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Froome’s claimed VO2 max numbers have ranged from 80.2-88.2, accounting for changes in weight.
“VO2 is both genetic and trainable and varies individually,” said Overton, who worked with the US national team before founding his own coaching business. “It is also affected by altitude, age and gender. The best riders have high VO2s genetically plus are able to push it higher with training. Us mere mortals have VO2s in the 50s, and our VO2 doesn't improve much with training.”
“Research says VO2 is about 80% genetic and the other 20% is trainable,” Overton said. “So if you have a VO2 of 50 off the couch, you probably shouldn't hold your breath for [Team Sky general manager Dave] Brailsford's call."
- 6 x 5 minutes @110-120% FTP w/ 3-4 minutes recovery
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