OP Here - probably, but retirement left me with to much frivilous think time. I am sure it was more than steady cadence , but my next ride with a lot of concentration on steady cadence over the same route, was about .5 mph faster. Nearing the end of that ride I could see the frequency of gaps increasing. I suspect being tired had a lot to do with that, I just lost ability to concentrate. Agree lost momentum is minimal but at my age I'll take every improvement I can find - without spend a lot of money. My sub. six century summer 2014 is looking more doable but I still have a LONG way to go.