Olympic Truth wrote:
What? while there is some truth and credible strategy to what you are saying,I have never known anyone that actually used the strategy to win based upon least amount of curvature. Maybe 400IH. I am very experienced in 400 meters. I should have run the 400 over the 100 in the Olys. Long story as to why I didn't.
That's because it's not a good strategy. How can a person know that he/she is going at exactly the right pace to beat his competitors? Usually in lane 8, you just trust your instinct, and hopefully your pacing will be okay, because if you've gone out too hard after the first 250 m, you're going to be dead in the water at 350 m. So either Van Niekerk really knew what he was doing (practiced doing the perfect pacing in time trials during practice), or he was absurdly lucky.
Every 400 m sprinter knows, however, that their times may greatly vary with pacing. Go out too hard and you'll feel it at 350 m. Go out too easy and you simply won't be able to catch up on the home straight. So being on the inside allows you to pace better because you can see your opponents. Outside of the fitness afforded to the runner by training, pacing is generally important.
As for the actual advantage of using the outside lane, the issue is that the advantage normally only matters if you can run with perfect pacing, which almost nobody does. The evidence exists though. For example, they've tested 200 m runners and clocked them on special straight 200 m tracks, and almost every time they will "break" their PB. Curves are fundamentally harder to run, and outside lanes are easier than inside lanes. The difference is small enough that other factors are more important normally, but if you are able to eliminate those other factors, then the lane draw is what could be the difference between a fast time and a record time.