View Single Post
Old 01-08-2013, 08:30 PM   #20
Hall Of Fame
Cheetah's Avatar
Join Date: Mar 2011
Location: San Diego
Posts: 3,840

Originally Posted by luvforty View Post
you need something to coil AGAINST... and here is where the 'friction' comes into play

It's not the friction. It's the ground reaction force. Literally the planet Earth pushing on you. The legs contribute about 20-30 something %, somewhere in the area, of the power IF you have a well established kinetic chain all the way to the racquet. The energy from the legs has to be efficiently transferred through each link in the chain which means up to the quads, gluts, hips, back, torso, upper chest, back, shoulders, forearm, wrist and then racquet in a coordinated sequential order. Then if you have good rotation and no kinks or hitches or a break in the chain you will get the 20-30 or whatever % it is.

It is not over 50% of the power even if you're Roger Federer. Therefore MOST of the power does not come from the legs. It's only one of the major contributors. The torso area contributes more power than the legs if you want to get technical.

I rest my case.

You're welcome.
Yonex VCore 100s - SW 351 6pts HL Tour Bite / Luxilon 4G 16 @ 51lbs

Last edited by Cheetah; 01-08-2013 at 08:32 PM.
Cheetah is offline   Reply With Quote