Originally Posted by PeteHski

The only reason I even brought this up was in response to ThermionicScott talking about working easy trainer sessions into his winter schedule, as a reminder that if you go down that route you really need to commit to a high volume to reap the benefit. The link to Couzens is interesting and the training volume discussed in that article appears huge. The graph of Cardiac Volume vs Training Volume scales from 13.6-20 hours. Then the athlete who went from 50-70+ V02 max had a training volume of 20+ hours biased heavily toward "Easy" and "Aerobic" riding i.e. 15 hours of those alone. So it's actually consistent with the "garbage" in the Wahoo article.