[jome]

I would agree with Per that unless you're someone who's training very very hard (and not only hard, but wise) and has reached a serious plateau, the time, effort and money that would go into IHT would probably be better invested in other areas. I mean if you just analyze coldly "what gives me the biggest performance gain for the invested effort". There is lot's and lot's of things training, technique, experience etc vise - even investing on better equipment - that might give you an increase of tens of %.

What a hypoxicator may be able to provide is the top few percent - important for a WR level athlete, but the average diver won't even feel the difference. And if you do it wrong, it can even take you backwards (the stress on the body generated by overdoing IHT can be too much if you don't know how to do it just right so you ensure also proper recovery).

But for someone who just likes gadgets and wants to tinker around - knock your self out. Just please be careful, those things can be really dangerous.

I've no personal experience, but the one person that I know who has tired it has his hypoxicator gathering dust in the closet currently...