I am currently updating my presentations for HS's, Colleges, and Club Directors. I have a question for you all.
I know somewhere in the literature is the idea that if you continually run Max Effort Sprints at 4.7 for 40 yards, you basically program your body to run a 4.7 forty. I cannot remmeber if the was from CFrancis, or CT, or Siff....etc.
Does anyone know where this idea came from... it lies at the basis of much of my speed and jump training since I manipulate the ballistic environment by slightly adding Weight or Speed through the use of vests, sleds, vertimax, etc, or depth work, AMT work, or overspeed devices....
Anyway, I will look myself, but I know many of you are very well versed, and hoped for some insight.