Cookster15
Moderator
Well, this is obvious: body fat mass. But when it comes to sportsmen in top form BMI vs VO2max relation is more complicated as they all have low body fat %. Then it's about other aspects (like bone mass, muscles efficiency, cardiac output etc), some of them are associated with BMI some are not.
Thanks for the follow up. But this raises more questions. I always thought Remco's relative VO2 max (milliliters per Kilogram per minute) was extremely high - close to 90?
Since the 2022 Vuelta Remco seemed to have very low body fat % and that would help his relative VO2 max as well.
So I am still not convinced of BMI as being a better indicator of climbing than simply watts per kilo. I think BMI is just an assumed truth in cycling circles. A rider who is shorter but stockier can have similarly low bodyfat % as riders like Vingegaard. As I said at the beginning, the physics of climbing doesn't care about appearance. It only cares about sustained watts per kilo.
But ultimately we are all guessing. We don't know Remco's true watts and we don't know his true weight. But I do know he was climbing very well in the 2024 Tour de France.
