SG, and inherent talent.
I once read about a guy who made great claims about how he went from being an ordinary runner to international level by giving more thought to his training.
But wait!
He didn't spend years doing 35 minutes for 10k and then improve. No! it turns out that the first race he ever did after a bit of running about was 31 minutes.
FFS, how representative is that!
I've mentioned this before, Steve Brace once said 'anyone could be a world class runner'. Note he said 'anyone' not 'everyone'.
By 'anyone' he meant there could be world class runners all over the place but most will never discover the fact because they don't run.
I tend to view potential like a set of goal posts. I'll try to explain if I can.
Take a runner who's not overweight but hasn't really trained and get them to do minimal training. Get them to do a race of say, 10k. Get the time.
From that result I'd say they could improve about 15%.
The goal posts are 15% apart.
From that idea, if a guy was destined to be a world class 10k runner then they could do 32 minutes off no training.
Edited: 10/01/2013 at 08:30