Assessment of Vo2max „at the wrist“ with Smartwatches?

Background: VO2max is the gold standard for endurance performance capacity. BUT: Measuring VO2max is often complex and expensive. Some smartwatches also provide VO2max estimates, but how accurate are these measurements?

Error compared to a breathing gas analysis: 5.7% (VO2max range of 38 – 61 ml/min/kg) BUT: In other populations (with different VO2max), the error can be different. So be cautious!

Full Text: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9286863/