600yd/600m man wrote:
2) Indoor technology has significantly improved. I have doubts about the integrity of indoor tracks. I believe indoor track are returning energy to indoor runners.
Don't you believe they were designed to?
I remember training on the Harvard indoor track in Jan/Feb 1988, after maybe 1 race indoor each year at RAF Cosford in the previous 3 years. There was this incredible "boing" feeling at middle distance paces, and after 2-3 sessions I was convinced it was easier to run at speed than on a flat outdoor track. Somebody told me that their engineering department had designed it for optimal energy return at 4 minute mile pace (I was maybe ten seconds off that year). Anyone know the history of it?
By contrast the one down the road at BU was better for 5000 - I remember Richard Nerurkar banging out a great indoor 5000. I think that was an old 11-laps-per mile one at that time?
Or, it might just be that you actually have to do less lateral pushing 'cornering' at speed on a banked track than a flat one, so more of your energy goes forwards. If that's the reason, the level of banking will dictate which event they are tuned for.
Or maybe some people just peak in Jan/Feb, and that's what they happen to be on at that time.