I discovered two things today-
First- my quads have definitely atrophied. It feels totally alien. It's like my legs belong to someone else's body! Surely MY legs are not this small and weak. I need more riding and less reading-about-riding. I've had a little bit of a funk lately. Time to break the trend and get back to adventuring.
The other thing happened whilst I was teaching Chelsea, one of our B women on the Whitman Cycling team, how to ride rollers. I was in the middle of saying, "when I rode rollers a lot in the winter, I eventually could ride standing up.. some people can ride with no hands, but I think that's way harder on rollers than standing up.." and to demonstrate I attempted to sit up with no hands.. and then I DID. Wha??
So my quads have shrunk.. but I can ride rollers with no hands!
It's all give and take.