A high VO2 Max is a superior metric. It is harder to achieve, and more predictive of health outcomes.
It’s possible and even somewhat common to have a low resting heart rate with a below average VO2 max, but it’s virtually impossible to have a high VO2 max and a high resting heart rate.
Why not just use resting heartrate? That also has very good empirical backing as a good proxy for overall heatlh, and its much easier to measure.
A high VO2 Max is a superior metric. It is harder to achieve, and more predictive of health outcomes.
It’s possible and even somewhat common to have a low resting heart rate with a below average VO2 max, but it’s virtually impossible to have a high VO2 max and a high resting heart rate.