Jens did a Q&A at my LBS and I asked how often a pro team does indoor cycling. To paraphrase, he said it's an individual's preference, but during the season probably 0%. However, during the winter/off season it's very important.
He went on to add that Team Sky does something like 2x20' (wu and cd) on the trainer before/after every race stage which adds up to 14 hours (in the TdF) of work in addition to the race, which is obviously a decent amount of volume.
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Madison photographer Timothy Hughes | Instagram
He went on to add that Team Sky does something like 2x20' (wu and cd) on the trainer before/after every race stage which adds up to 14 hours (in the TdF) of work in addition to the race, which is obviously a decent amount of volume.
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Madison photographer Timothy Hughes | Instagram