What physique, performance and strength changes would someone see from high reps?

[Bigkarl]

I always hear that for endurance athletes interested in lifting could find use with higher reps. But I've never actually seen anyone doing a consistent, well put together program with 15+ reps a set. Say someone ran a decent distance 3 times a week and did high rep compounds on off days, how would they differ from someone who is a pure runner? Better speed, explosiveness? Would they look any different?


Now I'm not asking have you ever seen a 13 year old do curls all day long, but someone properly train with high reps? Any experience with that?

[Bigkarl]

If memory serves, Zatsiorsky says they are used to increase the force production of the type I muscle fibres before the type II's get involved in a movement, because if the type II's aren't used they won't fatigue

So how would one train that way? Also I'd take it that you would have to stay <35 reps too right? As in you would still need some real resistance.