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Sprint profiling: Why do it, how to do it well and dispelling some myths with Les Spellman, JB Morin and Ryan Grubbs

Pacey Performance Podcast

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How to Calculate the Friction of a Sled

The friction assessment is very accurate up to 300 kilos, more than I can pull. The ratio between the mass that you put on the ground and the force that's normal to the ground are your friction coefficient. And this is very, very useful because then it helps you calculate the horizontal force outputs. But everybody knows that the same 40 kilo of mass on a different sled and on a different surface will give you a very different, you know, vertical pulling force.

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