nichole no, not so to speak...the ROM is decreased, thus less distance to push massive amounts of weight-speed is also increased as distance is reduced.
lola- so as not to bench press at a strict 90 degree angle...if you were to take a line from one hand to the other-while on a bench press-your arms and elbows would be perfectly parallel...this will cause alot of stress on the deltoids...by keeping elbows in a more natural state, ie; closer to the body, it is easier on the shoulder region and does not place it in a position for injury..from here the lats will be the drivers off the bottom...however, you dont want to exaggerate this either, by super-imposing arms rubbing on the sides of the body while performing bench press...just take a natural position-experiment with different grip widths and arm placement...one of the biggest mistakes I see in bench press, is the "stance"...lower body should be rock-solid while performing this lift, legs hips,(butt) should be firmly placed on the bench to provide a solid platform...move feet back a little as to tighten up the quads and be centered and balanced before proceeding...you will be amazed at how much weight can be driven up with proper form...sorry for being long winded...