Another interesting piece of equipment

[rainbowgirl28]

http://www.youtube.com/watch?v=S4jz9ULkkR4

[mjaubbs40]

Looks like a hammer strength "Jammer" machine often used by football linemen. Pretty cool--never thought of that.

[AR01]

That is a cool machine.

[souleman]

Looks to me like it's a back and knee injury just waiting to happen. I suppose though for the young whippersnappers it would be ok. Later..Mike

[golfdane]

"A back or knee injury waiting to happen"

My thoughts exactly! The weighted bar at the hips should be replaced by a coil spring loaded rope. Something that would put a slight pressure on the hips (equivalent or at least closer to the inertial force happening during an actual vault).

[spike gibeault]

you cant really drive up when you do that, he kindof throws his momentum down instead of up at an angle, i used to do that, but i pulled a "Corey shank" and went backwards down the runway... no offense corey