by Robh » Sat Feb 07, 2009 6:49 pm
[quote="Paul H"]I'm not convinced either. As far as I know, your lungs are not a limiter.
Others think differently, here's one views :-
http://www.pponline.co.uk/encyc/0979.htmThe Powerbreathe can be compared to a leg press so won't help with endurance. Try to use it for long periods and you will run into problems with hyperventilation. I was told most of the research done in the above article was carried out with the Spirotiger as it is still the only equipment where you can breath for 150 mins to the limit without a problem of hyperventilation and/or CO2 problems.