Katie Compton has cast doubts on the basis for Chris Froome's assertions that the use of his asthma inhaler resulted in an anti-doping test that found too-high levels of the drug salbutamol in his urine during the Vuelta a Espana. Compton has suffered from exercise-induced asthma throughout her career - on days it's under control, she is rarely outside the podium positions. On days when it's not, she can hardly pedal the bike.
For example, in December, Compton was third in Loenhout, and then dropped out of a race in Bredene the next day because of an asthma attack. She recovered to win the GP Sven Nys in Baal three days later. It's a pattern that has plagued her career.
When asked if Froome's anti-doping troubles made her worried about treating her own asthma with salbutamol, she laughed.
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"In Bredene, I had an asthma attack. I used my inhaler four times before the race, and then I had an attack, so I used it three times post-race to get me back to where I needed to be," Compton told Cyclingnews. "That was a legit[imate] asthma attack. That still is underneath the legal limit of salbutamol."
An inhaler delivers a fast-acting bronchodilator (beta2 adrenoceptor agonist or IBA) - in microgram quantities, typically 90-100 mcg per puff. The limit for salbutamol set by the World Anti-Doping Agency is 800mcg inhaled per 12 hours, or 1600mcg over 24 hours, and numerous scientific studies have shown that inhaling the drug within these limits causes very few athletes to test over the urine limit of 1000ng/mL.
But Froome insists that he used his inhaler as normal, and it resulted in a urine value that was twice the WADA limit - a sequence Compton challenges from her own experience.
- Froome returns adverse analytical finding for salbutamol
- A lot of explaining to do: The questions raised by the Chris Froome salbutamol case
- Chris Froome: I haven't broken any rules
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