what is a jump up?

Import · June 4, 2002, 1:09pm

n/m

Import · June 4, 2002, 6:02pm

Same thing as a lift off…

Import · June 4, 2002, 6:49pm

The term “jump up” is used to describe a movement in which a person exerts a certain amount of force through his/her leg muscles (gluteus, quadriceps, biceps femoris and gastrocnemius primarily) applying it to the ground, thereby propelling that person upwards (in a vertical manner) for a certain distance.

Import · June 5, 2002, 11:37am

Thanks for the responces guys