Ganas me entran de abrir un hilo titulado "¿ Está Bolt en decadencia ?" 

Artículo: Bolt es endemoniadamente rápido, pero aún lejos del límite humano.
Enlace: http://blog.wired.com/wiredscience/2008/08/bolt-is-freaky.html

Otro artículo: Descubriendo a Bolt, ¿Quién es, y deberiamos sorprendernos?
Enlace: http://www.sportsscientists.com/2008/08/beijing-2008-discovering-usain-bolt.html

Y pego aquí un comentario de los artículos anteriores que me pareció interesante (datos de la carrera de los JJOO):

Citar
For those curious about how fast Bolt might have gone without the celebration, track coaches have been grinding the race numbers (10m split times) to see how much might have been given up. The following splits have been calculated:

10m - 1.85
20m - 2.87 (1.02)
30m - 3.78 (0.91)
40m - 4.65 (0.87)
50m - 5.50 (0.85)
60m - 6.32 (0.82)
70m - 7.14 (0.82)
80m - 7.96 (0.82)
90m - 8.79 (0.83)
100m- 9.69 (0.90)

Traditionally most 100m athletes show some deceleration during the last 20-30m due to lack of speed endurance, or failure to relax (uses up extra energy). Depending on how generous you are, a relaxed and focused Bolt might go 0.82 for both of the last 2 ten meter segments; yielding 9.60. If you follow a traditional deceleration schedule for most 100m runners then you accept the 0.83 in the 80-90m segment and follow that with a 0.84 in the 90-100m segment; yielding a 9.63sec 100m.

Given how relaxed Bolt is while running, I would tend towards the lower end of the 9.60-9.63 range.

With a slightly better reaction time (0.165 in this race), a plausible time for Bolt sometime in the near future dips below the 9.60 mark based on his current performance envelope.

Saludos.

powell ha marcado 9.72 a 3 centesimas de bolt en una pista que no es la de los juegos, por lo que imaginaros si este corredor  lo hiciera bien en las citas importantes (si hubiera corrido igual en los jjoo este hubiera sido record por debajo del 9.6 por lo de las 18 centesimas menos que te da la pista +-), tendriamos un duelo powell-bolt impresionantes