i remember this session, i felt like i was going to just fly, too bad my ham pulled... single leg.. trying to become single leg was tough.. those hamstring/quad "pulls/cramps" really wrecked my leg
Yeah I guess a very good balance between the quads and the hamstrings is needed for one leg jumps. If the hamstring is weak then you will collapse in the plant and the collapse will be disguised as a quad weakness, when in fact the quads are being overloaded because the hamstring is too weak and to relieve tension off it the knees will go forward and overload the quads...
It's taken me a while to figure this out but this is actually the truth of the matter.
Maybe I should focus much more on hamstring development in my own training if I want good one-leg jumps. That and calf development.