usain bolt strides-some part off japanese documentary(korea maybe?)

www.youtube.com/watch?v=UA_Py8qTzm4

He gets to the 80m in 35 strides(knee raises) or 34 strides(foot contacts). Compare this with asafa and getting to 80m in 36 strides(knee raises) or 35 strides(foot contacts) during a similar documentary.