Speed endurance the key to *all* 11/12second sprinters?

This 180m workout was described as “moderate tempo” by the coach, i guess it is mid way between extensive and intensive tempo. I would tend to think it is extensive due to the quite long rest (8min). The journalist wrote : “il ne s’agit pas de forcer”. Thus the workout was by no mean difficult.

His reaction times were poor during the season, and curiously were good only in Berlin. This affects more the performance at 100m than 200m. Lausanne (the 19.5 race) was suppose to be a peak performance as Bolt announced the days before the meeting that he would run full out.

The 300-180-150 is described as speed endurance by the coach. I think he eventually only did one set but not sure. On the video, this is not a workout, just his usual warm-up before races, these are acceleration build ups, not tempo.