I've only been riding the bike again for a week or so, but I could already tell the difference when I played two-and-a-half hours of one-on-one basketball today. My knee was still balky, but I had improved lateral stability on spin moves and seemed to be getting off the ground more quickly as well. I'm sure the last few months of jogging and bouncing on the mini-trampoline also played a role. But it seemed to take the bike riding to realize the improvements they promised.
.