The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
in general the biggest issue is how how how much blood can you pump and and so what is that heart rate time stroke volume equation where does that leave us now when you train you get so you can extract more and if you're at high altitude or if you've got problems with your lungs maybe the lungs don't work as well but in general I like to tell people you cannot extract what has not been delivered so the key is delivery and that's heart rate times stroke volume
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
So what determines VO2 max? And as I alluded to earlier, it's many physiological things, but the primary...there'd be general consensus, scientific consensus, that the primary factor that separates individuals in terms of their VO2 max is their cardiac output. So that's what is the maximum amount of blood and in turn oxygen, or the maximum rate of blood and oxygen that's being pumped out of your heart every minute.