Originally Posted by
base2
This. Many of those factors increase oxygen utilization and delivery. Which aside from increased muscle mass reduce heart load for a given performance level.
ATP converts lactic acid back to useable energy. That's how you were anaerobic for an hour with out burning rubber legs. That is also why you were able to maintain 180, not 205 (Your actual max) To achieve a 205 BPM load on your heart you would need even moreeffort. You are fit.
MoAlpha is right & confirms my assertion.
I actually meant to disagree with you because increased oxygen utilization increases demand on the cardiorespiratory system, but that's fine. I'd rather be liked than right.
