Unverified50% confidenceFactExact time
The respiratory gas analysis used by PNOĒ belongs to cardiopulmonary exercise testing (CPET), which directly measures the concentrations of oxygen and carbon dioxide in exhaled air and is the gold standard method for VO₂ max measurement.
1
Sources
50%
Confidence
Long-term
Relevance
9/27/2026
First Seen
Sources
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