Originally Posted by
bigfred
I'm not sure how many of the riders are wearing HR monitors. Heart rate is a fairly course measure. I imagine most of them are using crank mounted power meters and simply basing any adjustments they might be making with regard to effort on those. Once you're racing, other than during TT and perhaps certain hill climbs, you're going the pace of the peleton or break away. Either you've got it, or you don't.
Any power meter is also going to collect HR data. Lot's of people howeverr choose not to bother with the HR strap when they use a powe meter.
Also, with the exception of the TT stages, I don't think you'll see many rides basing their effort on the power meter in the race.
Most people racing with power meters don't look at them during a race, or do so very infrequently.
I doubt the tour riders would be different in that regard.