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

[system]

@Charlie_Francis

I have triple periodization graphs but not related to Bolt. I do believe that, when push comes to shove, Bolt is following a S-to-L approach (albeit with plenty of tough tempo sessions, though I think they are still extensive- for him and prob only him due to his max speed) He competes first over 100m and then moves to 200m.

In 2008, that seems definitely true, but what about 2009? Arguably, before WCs, his 200m performance was by far the best. Not even considering that it was his worst conditions weather wise, the time was the fastest relative to the 100s he ran.