>>/54829/
Don't really know, but maybe? Probably? I almost never do anything sprint-like outside, but I did some long-standing PB numbers outdoors a few years ago at a time where my indoor numbers were way lower. I'm somewhat terrified I'll drop my chain or unclip at the worst possible time and heem myself brutally as certain other berts have done for no real gain. At this point I'd probably have to retrain my form for outdoors sprinting also.
 >>/54831/
I think a lot. I've never really trained sprinting apart from doing them at the end of Zwift races and I just added roughly 5% on top by just a few weeks of vo2 and sprint workouts. Not even any gym work.