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I saw an advert for Powerlung trainer on Sportspursuit and I've seen various reports about it's actual ability to help you increase your lung capacity and I wanted to see if anyone on here had any advice/opinions?
Does anyone use one? Does it help?
I've got Asthma and I've seen something very similar used in hospitals in patients to help build up their muscles to help them breathe more effectively so I can see it working in patients who's lung capacity isn't great to start with - but is it any benefit to athletes?