There are certainly legitimate asthmatic issues related to swimming.
But how do you ensure this isn't abused? People have been shown to take massive risks with all kinds of doping, but some small simulation during a spirometry test with zero risk involved is nearly unthinkable?
It wouldn't be hard to convince yourself that you are indeed asthmatic and then you can rationalize any simulation as helping the physician making the correct diagnosis in case your asthmatic symptoms might be too light during the examination.
The assertion is that Beta-2 agonists and corticosteroids do not enhance performance for non-asthmatic persons, so it doesn't actually matter whether someone "fakes" a spirometry test or not (how easy that is to do in a convincing manner I could not say). To judge the strength of that assertion would require extensive research but, in addition to the studies linked in the article, a cursory search turns up more recent studies that reach the same conclusion, such as
2021 meta-analysis.
Intuitively this would seem to make sense. Beta-2 agonists cause the smooth muscles lining the airways, which in persons with asthma are prone to constriction in response to various stimuli, to relax, returning to (or closer to) their baseline state of relaxation. For persons without asthma, whose airways are not prone to this constriction in the first place, there would appear to be no benefit.
If there are one or two athletes who are asthmatic then it is an inspirational story. But when the whole friggin team is asthmatic then don’t blame us for being skeptical
This seems to be a multi-headed monster:
1. Persons with asthma are encouraged to become swimmers.
2. Swimmers are prone to
developing asthma in proportion to the intensity of their training.
3. That WADA regulates the use of Beta-2 agonists as potentially performance-enhancing substances creates a perverse incentive for non-asthmatic swimmers to seek therapeutic exemptions for such in the
belief that such substances may improve performance.