Michael Johnson analyzes Usain Bolt's sprinting.

"Michael Duane Johnson (born September 13, 1967) is a retired American sprinter. He won four Olympic gold medals and eight World Championships gold medals.[5] Johnson currently holds the world and Olympic records in the 400 m. He formerly held the world and Olympic record in the 200 m, and the world record in the indoor 400 m. He also currently holds the world's best time at the 300 m. His 200 m time of 19.32 at the 1996 Summer Olympics stood as the record for over 12 years. Johnson is generally considered one of the greatest and most consistent sprinters in the history of track and field." - http://en.wikipedia.org/wiki/Michael_...)

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