Dave Brailsford has said that Team Sky may release limited data into the public domain in response to some of the estimates of Chris Froome’s power output that have been published during this Tour de France.
Froome’s performance in winning atop La Pierre-Saint-Martin last week has come under particular scrutiny, with exercise physiologist Pierre Sallet claiming on France Télévisions’ "Stade 2" programme on Sunday evening that the Sky rider had produced 7.04 watts/kg during his effort.
Sallet did not elaborate, however, on the methodology he had used to calculate Froome’s power output. Brailsford was a guest on the show, and at the start of stage 16 in Bourg-en-Péage on Monday morning, he said that he had not been told how Sallet had arrived at that figure.
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"No, no. They want transparency but they won’t give you the mathematical model of the estimations that they’re using," Brailsford told a small group of reporters outside the Sky bus. "And everybody knows that when you estimate, there’s a margin for error. There was a good paper published recently by Yann Le Meur about exactly that, and in the scientific paper they said there was a plus or minus 6-10% error. There are so many variables you have to take into consideration."
While Froome looked to place the blame on sections of the media for the aggression displayed towards his team by supporters on the roadside in recent days, Brailsford repeated his calls for the UCI to add a power analysis element to its current biological passport system.
"I don’t think you can say that it’s only the media because if everybody believed in the tests, then you wouldn’t be in this situation," Brailsford said. "The problem is that everybody doesn’t believe in the tests, and I think that’s the responsibility of the UCI – to manage things better, to be more proactive and try to think a bit outside the box maybe to find a more innovative solution to try and reassure the people."
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