4 hours a day of training for 11 years stands out in my mind. I am disappointed there is no video of him squatting in the segment. that was the real reason he could jump out of the block so fast, he was so strong.
I found this video, in a different language of him as an older guy I think. This was just the first one I found. there are probably more.
http://www.youtube.com/watch?v=w-K5An8qf1Qskip to 2:30