Eddy,
I am interested in this too. As far as I know, if you make any mention of athsma you can expect to take a run around the block so that they can see the effect of your asthma on your breathing ability. They do this, as far as I know, by asking you to blow into one of those lung capacity tubes before and after the run. If and when you go for the medical I would appreciate your version of this as what I am providing is second hand info!