VO2 max measures the maximum amount of oxygen your body can utilize during exercise, an indicator of aerobic fitness. Lab tests provide the most accurate VO2 max readings, while wearable devices estimate it with varying levels of accuracy using algorithms based on GPS, heart rate, and other factors. The post compares VO2 max results from several wearables, including devices from Garmin, Apple, Polar, COROS, Suunto, Ultrauman, and Amazfit, to a lab test. Accurate wearables generally align closely with lab results, while less accurate ones can vary significantly.
•15m watch time
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