thanks Scott. I suspect this is why I am being instructed to run not hike( even though it’s a slow pace) and to do the workout on a treadmill where there is no “escape”. I have observed what you are describing : hiking outside on very steep terrain the burn shifts to my quads and its the LME that limits my pace more so than LT or AeT etc. I suspect that these treadmill workouts are going to show real gains in trail races