SPDSpappy
Active member
Interesting article, but doesn't seem conclusive. The author states "respiratory muscle training significantly improved performance on breathing-related tests." What would be a more appropriate test for the discussion here would be to take 2 groups of similar athletes, train one set with and one without the mask, then take both to altitude to see how they handle it, or am I missing something? I already have the mask and have noticed it's more difficult to train with it on, so I might as well keep using it.