Originally Posted by KINGofTHEcourt
Not really, method probably wouldn't help. Lets say I go the first 200m at 90% and get there in 27-28s, when I might have been able to reach it in 26-27. I lose 2 seconds, but there is still 200m to go no matter what. If I run it all 100%, i'm moving as fast as possible, for the entire 400m. Its all about moving from point A to point B as fast as you can, it doesn't help to divide speed up, unless you can't sprint 100%.
Which is exactly why I wouldn't sprint 100% for a 400m, it'll turn out worse than dividing up the pace. If I sprint, by the third 100m, I would be down to 60% or even 50%, because the two primary energy sources in your body are naturally exhausted by then. That's why it's physically impossible to go all out for that long. There has to be at least the slightest decrease in effort to maximize the length in which you can sustain that speed.