I thought post-race massaging somewhat replaces cooling down? Nup?
Here's some "antidotal" evidence from me, about me. Ha (comedy gold from me, as usual per).
A few times over the years, I've been out training and had to rush home like a maniac to get to work on time, to the point where I time-trialed 100% right to my front door. Each time I've done this, my legs killed me for about 3 days, as if I had DOMS from doing heavy weight. However, I was well accustomed to cycling hard, so it wasn't DOMS. The last time it happened I thought there was something wrong me.
Having said that, just because my legs were sore, I dunno if it effected performance, coz I don't have a powermeter.
boom shanka