It isn't physics, it's physiology. Due to the influence of ATP-CP metabolism, both the 400 and 800 are best run as positive split.
No, physiology is a subset of physics.[/quote]
That explains why I had to get a physics degree before I went into physiology research....not!
There is nothing special about ATP-CP metabolism in this context. No matter the molecule, positive splitting is NOT the best way to run your fastest time.
You are impressive in your lack of experience and knowledge of running 800m competitively. For starters, I suggest that you look at the splits of every 800m world record....ever.[/quote]
Good points made but ultimately, a slight positive split is optimal, of all 800s I've run my best times were positive split races. The neg split races were funner and felt better but ultimately didn't get the PRs that way.