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How do you know the Garmin isn’t the inaccurate one? Because it used a power meter? Unless a tube is stuck in your mouth for you to breath through, they are al
by mikestew 6y ago
How do you know the Garmin isn’t the inaccurate one? Because it used a power meter? Unless a tube is stuck in your mouth for you to breath through, they are all just “predicted VO2Max”, not measured. I don’t know which is more accurate, but I would hesitate to favor one over another without baseline against a real VO2Max test. However, like a weight scale, as long as it is accurate versus itself it is still a useful number.
EDIT: though you might not be wrong: https://sites.udel.edu/coe-engex/2019/03/16/how-accurate-is-your-garmins-vo2max-estimate/ https://sites.udel.edu/coe-engex/2019/03/16/how-accurate-is-.... Summary: Garmin's algorithm from Firstbeat is pretty darned accurate.
- 8ytecoder 6y agoI'm aware how VO2Max will be calculated in a lab. But a powermeter is a closer approximation since the effort is captured. In cycling, if you don't have a power meter the estimate would be based on distance and climb and won't factor wind or other external factors. Also, I know it's definitely greater than the Watch estimate. With a below average cardio I can't bike the distance or climb I do on average. I did 3 metric centuries last year (with climbs over 4000ft each), for example.
- nradov 6y agoEven for running without a power meter a Garmin device can give you a fairly accurate VO2max estimate if you do an occasional max effort time trial. But it has to be on a flat course: the FirstBeat Analytics algorithm doesn't account for hills. I have had a real VO2max test with a breathing mask on a treadmill and the results were very close. https://www.firstbeat.com/en/science-and-physiology/fitness-level/ https://www.firstbeat.com/en/science-and-physiology/fitness-...