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Olav Aleksander Bu

👤 Speaker
734 total appearances

Appearances Over Time

Podcast Appearances

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

And the problem with this is that all the tables we have today, which basically look as a ratio where you use RQ to say something about the ratio between carbohydrates and fats, we normally say that, well, this is good up to an RAR of one, but above one, we don't do it anymore because exactly lactate and other things becomes a too large contributor to it.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

And the problem with this is that all the tables we have today, which basically look as a ratio where you use RQ to say something about the ratio between carbohydrates and fats, we normally say that, well, this is good up to an RAR of one, but above one, we don't do it anymore because exactly lactate and other things becomes a too large contributor to it.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

So this already tells us that we have to be also cautious when we look at RQ and just go crudely into a table and just say, okay, this is your fat metabolism. This is your carbohydrate metabolism because it is- Do you feel we can do that safely up to one? No. Not even? No, no, no, no. Not even.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

So this already tells us that we have to be also cautious when we look at RQ and just go crudely into a table and just say, okay, this is your fat metabolism. This is your carbohydrate metabolism because it is- Do you feel we can do that safely up to one? No. Not even? No, no, no, no. Not even.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

I would say that for elite athletes, if you're an endurance athlete, I would already start being skeptical around in the low 90s. Okay.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

I would say that for elite athletes, if you're an endurance athlete, I would already start being skeptical around in the low 90s. Okay.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

That's a longer time since I basically really paid a lot of attention to that.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

That's a longer time since I basically really paid a lot of attention to that.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

No, because here it also gets a little bit more complicated simply because one of the things we do, because we also do isotope tracing also of substrates as well. We've used quite a lot of carbon-13 or 13-carbon over the last years.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

No, because here it also gets a little bit more complicated simply because one of the things we do, because we also do isotope tracing also of substrates as well. We've used quite a lot of carbon-13 or 13-carbon over the last years.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

And we added that as a tracer to glucose and fructose, for example, to look at how much of the exogenous carbohydrates, to use a more common term, how much of the carbohydrates that you ingest that you're able to utilize. Because obviously you have your own glycogen and your own fatty acids. Yeah. And then you won't understand how much confidence.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

And we added that as a tracer to glucose and fructose, for example, to look at how much of the exogenous carbohydrates, to use a more common term, how much of the carbohydrates that you ingest that you're able to utilize. Because obviously you have your own glycogen and your own fatty acids. Yeah. And then you won't understand how much confidence.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

And this is also where exactly when you look at even view to max, this starts also to become where you understand that in our context, this is a little bit of less valuable purely. Because if you took Christian, for example, or Gustav, and you test it just before race, So you did exactly the protocol we just talked about. You did the stepped up warmup, a short effort just to make your body ready.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

And this is also where exactly when you look at even view to max, this starts also to become where you understand that in our context, this is a little bit of less valuable purely. Because if you took Christian, for example, or Gustav, and you test it just before race, So you did exactly the protocol we just talked about. You did the stepped up warmup, a short effort just to make your body ready.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

Then you did a graded exercise test to view to max. Okay, fine. You went out, you did your racing. And then basically at the moment you come over the finish line, you test this again, or even half an hour afterwards. It would matter a little bit, but not that much. You will basically see the race pace is actually now coming to the point where it's extremely close.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

Then you did a graded exercise test to view to max. Okay, fine. You went out, you did your racing. And then basically at the moment you come over the finish line, you test this again, or even half an hour afterwards. It would matter a little bit, but not that much. You will basically see the race pace is actually now coming to the point where it's extremely close.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

Like your utilization from the beginning of the race to the end of the race have completely changed. Sorry, you're saying fuel utilization? Yes. Not only your fuel utilization, but also actually would also imply fuel utilization, but also your threshold sits now so much closer to, yeah, yeah.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

Like your utilization from the beginning of the race to the end of the race have completely changed. Sorry, you're saying fuel utilization? Yes. Not only your fuel utilization, but also actually would also imply fuel utilization, but also your threshold sits now so much closer to, yeah, yeah.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

And also for Christian and Gustav, when they do Ironman racing, this is getting, let's say, in those domains. We can't push it all the way because it has some implications.

The Peter Attia Drive
#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)

And also for Christian and Gustav, when they do Ironman racing, this is getting, let's say, in those domains. We can't push it all the way because it has some implications.