In Norway, there is a debate regarding the use of asthma medicine in sports. The debate was fueled by the doping violation of the cross-country skier Martin Sundby. It has also been stoked by the use of asthma medicines for healthy athletes as well (the explanation being lung infections).
Sports authorities insist on that the use of asthma medicines (via inhalor/nebulizer) are not performance enhancing. However, some studies imply the opposite (Morten Hostrup Nielsen et al).
What so you think? Do you have any studies you would like to share on this?