Posted by: PFB
Q. Is there a difference in doing floor presses, compared to inertia presses (close grip) off of a pin in the recruitment of triceps?
A. I think there is a difference, albeit minimal. Floor presses limit the range of motion of the humerus to the actual floor. Pin presses allow for a slight "running start" with the upper arm before applying force to the bar. Also, floor presses make you hold the load when the triceps are resting, pin presses don't. These facts alone make me prescribe both variations instead of assuming they are the same.