JAA
Footballguy
I would LOVE to hear how HR does not play into VO2 max at all.And to clarify the knowledge you're dropping, vO2 max is not a measure of HR at all. It represents maximal oxygen consumption during physical exertion, which in turn reflects cardiopulmonary fitness. The units are mL oxygen consumed per kg body weight, per minute. Not beats per minute.Exactly why I didnt choose some random HR.Yeah, obviously there’s selection bias in play, but the number of people volunteering resting HR below 50 and vO2 max above 50 in these threads is astonishing. Both of those values are in the upper 5% of fitness for middle aged dudes.My resting HR is around 45. I get the same thing at the doctor - distinct impression that this is way out of the ordinary.I think humans should focus on resting heart rate and VO2 max. IMHO those are the only 2 metrics which should count. Waaaaaaaay to many different body structures out there, none of which are "wrong".Sub 20% guy…..![]()
I know you all are just jabbing at each other a bit, but it's kind of a demonstration of what I just posted about: Thin guy negging on somewhat-less-thin guy over body-fat percentage. Both of you probably look like a starving underwear models in a room full of obese people.
Related: In the world of "people who are serious about fitness" ... how serious are the "idea wars" about best diet, best fitness ideas, etc. Does it ever get to the point of profound disrespect? Do the "Mediterranean diet" guys think the Keto guys are loons?
My VO2is between 39-40 (58 years old), so not too bad. My resting HR is around 48-52. Funny thing is, yesterday went for my bi-annual physical. BP was 114/64. O2 was 98%. Pulse was 48. Nurse did it twice asking if the low HR was normal...
And to pile on fat-shaming @DA RAIDERS, 99 is the upper end of “normal” for resting HR. Kinda like 21% is considered high normal for middle aged men (there’s controversy here, but play along).
But I’d never pick that HR as a target for CV fitness, especially if someone was having chest pain.
Everyone has a resting HR. Also, VO2 max is not a specific HR, but HR over time.
While it's most accurately assessed via cardiopulmonary exercise testing, which directly measures gas exchange during exertion, availability of such tests is limited, and they are expensive. So there are several formulas available to estimate vO2 max instead. One method involves the ratio of maximum HR to resting HR, another uses distance covered while running, still another uses post-exertional HR, body weight and age. Like BMI, those estimates aren't perfect, but they offer practical alternatives for the real world, and are good enough for most applications.
Nowadays, smart watches estimate vO2 max from HR at sub maximal exertion. So even though HR is incorporated in many vO2 max estimates, it isn't a surrogate for HR over time, but more a reflection of the connectedness of cardiopulmonary physiology.
VO2 max is exertion over time where exertion is elevated HR within your unique HR zones. Your claim that HR does not play a critical role in the consumption of o2 over time is disingenuous. Is your position VO2 max can be calculated using someone's resting HR? That exertion (ie elevated HR) does not matter at all?