The team of Tour de France leader Chris Froome bowed to pressure Tuesday and released data about his riding power, heart rate and pedaling rhythm, hoping to quell speculation about doping. But according to Greg Lemond, who won the World Championship twice and the Tour de France three times, assured that the Sky rider's performance is within the realm of human performance.

"You have to combine the [physiological] testing with the passport. Can people do what Chris did on the first mountain stage? I think it was 6.1 watts per kilo, which I think that's within the realm of human performance", he told Cyclingnews. "I talked to him ... he's just saying release the data. I looked at it, and I didn't really see a whole lot to be worried about and so, and I think he's just pushing for transparency. Not to critique Brailsford or anybody at Sky but when you hear marginal gains, this is kind of what Lance Armstrong used in the past, so that kind of brings up a little bit of sensitivity."

During the rest day, Team Sky published a lot of data, but has not released Froome’s power data. "Everybody has got to understand, it's not just a watt for a split second, what we're looking for is long-term, over 20-30 minutes or 40 minutes at aerobic capacity, as close as you can get to your VO2 max ... all the world-class athletes are trying to get as close as we can to our VO2 max, that's a stable output when you can do that for higher work loads, not for just 30 minutes but repeat, even an hour and a half over a day's stage, that's what makes the difference."