Trevor, I have a question; it's a bit selfish of me to use this forum as a shortcut to you, but the topic may be of interest to others. When I checked my equipment for virtual power before I signed up, the menu said that Kreitler 2.25 rollers were supported, but on the trainer menu under "devices" now that I have the program, there are no rollers, only forkstands. Is there a trainer that you would suggest as a stand-in for rollers?

I had a couple of workouts with my KK trainer, though, and I think I have it sussed (didn't do the FTP test yet, just my rainy day zone 2 hours). When you say that kJ roughly equal calories, I vaguely remember reading something about the difference and how metabolic inefficiency more or less makes it a wash, but I can't find whatever it was I read online, only calculators that tell me that they aren't equal at all. Can you (or anyone) point me toward a site or discussion that can help me understand?

Thanks!