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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)

Well, actually not more glucose because since the RQ here is basically also now in favor, you actually are able to oxidize more fats.

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

Well, actually not more glucose because since the RQ here is basically also now in favor, you actually are able to oxidize more fats.

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

This is a rabbit hole I would like to go down into. We'll delve gently.

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

This is a rabbit hole I would like to go down into. We'll delve gently.

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

Because also the difficulty with this is that if you just look up purely the RQ of where basically the threshold sits as well for elite athletes or for any athlete that you have in the laboratory.

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

Because also the difficulty with this is that if you just look up purely the RQ of where basically the threshold sits as well for elite athletes or for any athlete that you have in the laboratory.

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

From some literature, you would just say, okay, if you have an RQ, let's say around talking about thresholds, you'll find several places in research literature where they basically just use an RQ of 0.96 as a proxy for your anaerobic threshold, for example. But this is something that you also see is different.

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

From some literature, you would just say, okay, if you have an RQ, let's say around talking about thresholds, you'll find several places in research literature where they basically just use an RQ of 0.96 as a proxy for your anaerobic threshold, for example. But this is something that you also see is different.

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

If you basically take an athlete in a training for short course or basically for sprinting, you will basically see that then basically you will have an RQ that is higher than 0.96. If you go to extreme endurance athletes, this actually gets closer to 0.94, 93, 92 even.

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

If you basically take an athlete in a training for short course or basically for sprinting, you will basically see that then basically you will have an RQ that is higher than 0.96. If you go to extreme endurance athletes, this actually gets closer to 0.94, 93, 92 even.

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

So the implication of this is that if you then measure the lactate threshold, you will actually come into a zone already at 0.92, 0.93, where you actually are starting just as a function of time now, you will get a higher lactate concentration in your body.

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

So the implication of this is that if you then measure the lactate threshold, you will actually come into a zone already at 0.92, 0.93, where you actually are starting just as a function of time now, you will get a higher lactate concentration in your body.

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

And if you take that lactate concentration now and you calculate the volume of lactate that is available in your body, you'll actually see that the volume of lactate now becomes a significant contributor to actually your energy production.

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

And if you take that lactate concentration now and you calculate the volume of lactate that is available in your body, you'll actually see that the volume of lactate now becomes a significant contributor to actually your energy production.

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

Yes, so plasma volume, but this is a good thing. We have our own machine for measuring carbon monoxide rebreather. So we do regularly also testing of basically their blood volume, plasma volume, and hemoglobin mass as well when we do this testing as well. And of course, you want to know also something about the water content in the body as well. There are different ways.

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

Yes, so plasma volume, but this is a good thing. We have our own machine for measuring carbon monoxide rebreather. So we do regularly also testing of basically their blood volume, plasma volume, and hemoglobin mass as well when we do this testing as well. And of course, you want to know also something about the water content in the body as well. There are different ways.

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

The gold standard is probably double-labeled water, and we've done this as well. But the point is that to give you an example, You can easily, at 0.92, 0.93, go from, let's say, if you consider normal lactate levels, or let's say, if we then take it into volumes, it would mean that the energy contribution from lactate could be, for example, 5.

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

The gold standard is probably double-labeled water, and we've done this as well. But the point is that to give you an example, You can easily, at 0.92, 0.93, go from, let's say, if you consider normal lactate levels, or let's say, if we then take it into volumes, it would mean that the energy contribution from lactate could be, for example, 5.

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

But if you just stay long enough there, basically, you would say that, okay, if these were the levels, you're talking about now 13, 14% energy contribution from lactate.

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

But if you just stay long enough there, basically, you would say that, okay, if these were the levels, you're talking about now 13, 14% energy contribution from lactate.