Heart rate @ VO2 max

I have no idea what you are trying to say, so I give up.


Cool beans, bro. That’s what the TR forum is all about – to help each other fill in those mental gaps.

You’ll find literally thousands of completed VO2max repetitions by us reeeeaaaalllly motivated TR users.

Peace, love, and O2 uptake, bruh! :green_heart:

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In response to the OP, I’ve noticed that when doing VO2 Max intervals using TR workouts indoors, that my HR is generally around 95% of my maximum of 181. So I’m seeing over 170.

This gets marginally higher as the intervals go on or if they are slightly longer in duration.

It has gone higher when I’ve buried myself if I’ve been feeling a bit ‘off’ and had to work harder than I would otherwise do, but that isn’t the norm.

I’m not very fit though, so that may affect how my body responds.

Hope this helps. :+1:t2:

I didn’t realize that so many people here worked out wearing a facemask, to know that they were at max VO2.

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Negative. :smiley: Just goes to show you can’t always trust a textbook. VO2max is maximum oxygen consumption at a particular sort of exercise. That equation is going to give you one number for one person…not the way it works. Your maximum oxygen consumption while you are rowing is different than your maximum oxygen consumption while you’re are cycling is different than your maximum oxygen consumption when you’re cross country skiing is different than your maximum oxygen consumption while you’re running. But in all those cases you’ve still got the same Max HR and Max SV. That’s because it’s not heart rate or stroke volume that limit oxygen consumption…that limiter is found in the muscle.


slow component.

During a 6-8min max effort that would yield a true VO2 max, the athlete will also hit max HR.

But, for hitting VO2 max via the slow component, an athlete could be under max HR yet still be at maximal oxygen consumption.

As for folks who want to do intervals at 100% VO@ max – you don’t have to hit 100% to be training stroke volume and mitochondrial efficiency. With the right manipulation of work/recovery intervals, those things can get plenty of stimulus by working at 90%+.

Props to anyone who can do 5 x 4min intervals at 100% of actual VO2 max. I know I can’t.


Maybe they knew nCoV was on the way. :+1:

And how is that possible? Are you saying that SV or O2 extraction increase further? I would think that SV would go down, not up over time. My understanding is also that the muscles are already sucking practically all of the O2 out of the blood.

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Yeah, I’m pretty sure that is indeed the way it works. Anything else would require you to manufacture O2 or something. After all, it is just simple algebra.

As for different sports, we were taught that you had only one max VO2. Everything else was a peak.

I also think that you are wrong about the muscles being the limiter. If that were true, then blood doping or EPO would be worthless.

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How is *what" possible? The lack of a quote function is getting the way here…

I’m not saying that hitting VO2 max via the slow component happens in the same way that it does in a 6min test effort.

All I’m saying is that you don’t have to flog yourself at 100% of tested VO2 to train the energy delivery for 4-8min efforts.

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The problem is you’ll be unable to observe it working that way! :wink: Athletes will have a higher VO2max recorded on the treadmill than they will on the cycling ergometer. Sorry, bro, I didn’t make it that way…it’s just that way.

You were taught something that departs from what is observable. Your treadmill VO2max is going to higher than your cycling VO2max. Cross country skiing VO2max is higher than cycling VO2max.

I’m sorry that you had to find this out on a forum. They should have taught you during your coursework.

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I would suggest that HRmax should be replaced with HRpeak (modality specific) to make the statement true.

When you are at HRpeak for a given modality you will be at VO2max for that modality.


That might be true…I’m less sure about that one! What I will say is this: you can ride your bike at some power moderately above your threshold power…watch your oxygen consumption & HR…at some point your oxygen consumption will plateau. That’s VO2max. You can go on like that for a while but not forever, but let’s just say you go on like that for 120 seconds & then the lab tech says, ‘NOW GO HARDER!’

You can go harder. Your heart rate will go higher. It won’t last long but it will happen if you’re properly motivated. But you can be at VO2max and still have heart rate reserve left.

As to stroke volume…I admit I don’t know for sure. Just as an aside, though, I did read yesterday in one of @bbarrera’s excellent contributions to the forum that SV reaches a plateau well before oxygen consumption does during an incremental exercise test. Like 40% to 50% sooner. I was surprised to see that it happened so soon.


Sorry, still figuring out this forum.

That’s what I was getting at. How do you drift up to VO2max without HR going all the way to max? I don’t think that is really possible.

I don’t recall anyone saying that you do?

No, I’m pretty sure that I am right on the distinction between VO2peak and VO2max, e.g.:

BTW, way back in the day I did both treadmill and cycling tests. Being a cyclist, not surprisingly I couldn’t reach max VO2 when running.

I dug out my old ex fizz textbook. Here is what it shows happening.

I can’t figure the quote function, either. I write it off to six concussions and 54 years of age.

Here is a fresh, rested 5min test. Either I was a huge wimp, or I was full gas at below my cycling HR peak of 171.

I’ve hit 171 on an 8min test before, but never on a 5 or 6min. My power curve is pretty flat, so it’s not like I’m ramming it anaerobically on these.

Or, maybe I’m just a wimp with insufficient motivation.


VO2 = HR x SV x O2 extraction would seem to apply regardless of the conditions, wouldn’t it?

So shouldn’t it be VO2peak = peak HR x peak SV x peak O2 extraction?

Hit the trifecta and voila! you’ve reached max VO2.

What was your VO2? Did it reach max?

Maybe. But that’s some other conversation. We’re talking about whether or not there is one VO2max for one person for all exercises. There’s not. An athlete’s oxygen consumption will plateau (VO2max) at different levels on a treadmill than it will on a cycling ergometer than they will cross country skiing. For instance, treadmill VO2max will be greater than cycling VO2max. That’s just the way it is, Fick equ’n notwithstanding. (BTW, you should probably review the Fick equ’n)

There’s no mystery there. That’s not a profound statement. It’s not a case of splitting syntactical hairs. That’s just the way it is.

If you want to start a thread about VO2peak, start a thread about VO2peak. I’m down for that.