I agree, because if the quads were only 5% of vertical jump, then why the great upper quad developement on sprinters, when sprinting is supposed to be even less quadricep % contribution that a two leg vertical jump?
I agree, because if the quads were only 5% of vertical jump, then why the great upper quad developement on sprinters, when sprinting is supposed to be even less quadricep % contribution that a two leg vertical jump?