I can only speak for myself, but since adding it to my chest routine, I have noticed my lower pecs, getting much more rounded. Some people say they are worthless, however, I personally love them.
Not to mention, I seem to be able to go much heaver on them. Just my 2 cents.
i quit decline now all i do for chest is incline/flat/fly's/dips i will bring em back soon though, but as of right now i cant do anything upper body except abs due to my broke ass arm
all i use is heavy incline dumbells and decline barbell. flat bench hurts!! incline at 20-30degrees is as flat as i get. but yes declines rule!!! close grip declines too
So I take it that doing declines can really put some shape into the pecs? Right now I have been doing flat bar/dumbell and incline...and my pecs ahve gotten much bigger at the top and have separated alot but I have no roundess or thinkness at the bottom. Will this help?
Your range of motion (actually distance moving the weight) on a decline is a lot less than on a flat bench. Also you get a great deal of support from your triceps. As for "shaping" your pecs, that's going to be genetic, not "lift made". Different guys just have differently shaped chests and that's just the way it is. IMHO, with flat and incline work you can hit your pecs as hard and from as many angles as you need to for optimal development.
Do this.....put your arm straight out in front of you and contract the pecs. Now put your arms down on a 45-60 degree angle and contrat the pecs..........Which gives a stronger contration to the Pecs? The second one does by far.
More fibers are activited in a decline bench and or dips with elbows out over the regular bench press. As far as I am concerned the decline bench and dip is superior to the regular bench for adding overall mass to the chest.