[jome]

I thought I'd clarify a bit what I meant.

The original question assumed that he needs to push "100%" and as he's unable to reach that without hyperventialtion, it would be good. In essence, I read this as you want to push as close to samba every time as possible.

But I think who ever wrote that you need to push close to your limit to get training benefit didn't mean exactly that. It is (in my belief) the stage of hypoxia which triggers the adaptation.

If you hyperventilate much, yes, you can push your self to samba every time. However, you might be having sambas at SaO2 of 90%.

If you don't, you might not be even close to samba, but your SaO2 is in the 80's, or even lower.

So even if you didn't make it "to the end", you still got a better training stimulus.

It must be understood that extreme hyperventilation does not only delay the breathing reflex and make it possible to push over your limit. That's not the only reason it's dangerous. It also significantly lowers your limit.

Especially in training, times are not important, the kind of stimulus you get is. Doing non-hyperventilation statics both increases your co2 tolerance immensly, builds mental strength and the will to resist and gives the best hypoxic training. All in one package.

Just my opinnion, I'm sure there are different ones...

Then on "record days" you can experiment with the kind of strategies I and Naiad mentioned and see what works and what does not.