Strong feet and extrinsic muscles are necessary to control pronation when using shoes with higher stack height.

“the more stack height on the shoe okay so this is the more cushion it changes the rate of loading it speeds us through pronation H this is very important so the more stuff I have it's going to change the rates of loading we've been talking about that all morning how we want to do what to it we want to slow it down we want to control it and now I'm going to put something underneath the foot that's potentially going to speed it up you better have what a very strong foot and very strong extrinsic muscles to control that pronation”