Whatever it is he does, Bolt seems to get his 200m time down quite low in a very short period of time (clearly after top speed is in place) but appears only to need a period of 3-4 weeks of concentrated 200m work to bring his times down to what we have witnessed in the past couple of years. For example in 2008 he ran 19.76 (-0.4) at Crystal Palace on 26th July and ran it quite hard (it was only 0.01 outside of his personal best). Clearly his 200m speed endurance was not in place as he had already run 9.72. By 20th August he runs 19.30 (-0.9). This year was hard to tell as many of his runs were in terrible weather conditions. However it does appear that he does a triple periodized year with a very short SPP3 late season.