stickupkid wrote:I was looking at some Dorian Yates - Blood & Guts Trainer - Chest & Biceps Episode 1 on YouTube.
Dorian Yates states traditional bench press is a shitty pec exercise; he quite openly says people should do more decline bench press which works the whole chest not just the bottom and is a smarter way to do bench press, does anybody do decline bench press?
Agreed that traditional flat chest presses are far from optimally effective - but disagreed on declines being better or working the "whole chest". At issue is the functional plane of the muscle. The pectorals primarily move the humerus, rotating it laterally. To a degree, chest presses can simulate this. However, to complete the rep, your anterior deltoids and triceps necessarily engage to push the weight straight up. In essence what happens is your delts engage to bring the weight to where your arms make about a 110-120 degree angle (elbow to elbow), and then your triceps are pulling your lower arms straight at the elbow while your pecs pull the humerus at the shoulder (and as such the rest of the limb) and up the weight goes.
No matter what kind of press you do, incline, flat or decline,
this always happens. This is half of what makes presses (of any sort) less the optimal. The other piece of the puzzle is at the top of the rep, the resistance diminishes. Flys are particularly bad in this respect - the arch of the arm to perform a dumbbell fly makes it so at the top of the rep it's actually the biceps and triceps holding the weight in place, and not the pecs at all (go ahead and do one and hold the weight at the top, you'll see what I mean). Presses aren't quite as awful, but a fair amount of load does transfer from the muscles to just the bone structure, especially if your form isn't up to snuff and you let the elbows lock out at the top of the rep.
It's also not possible to work the pectorals without engaging the deltoids - the biomechanics are such that since you generally start a chest exercise with the arms at around 180 degrees apart, your deltoids will begin the movement since the pectorals literally can't. Don't take this to mean you should start with your arms closer - only do that if there's a shoulder issue at play, since you
do want to catch the pectoral from right where it engages all the way to peak contraction.
That said, the decline is effective, and for many more effective than flats and inclines, but it has absolutely zip to do with working the "lower pecs". You do not have lower pectorals any more than you have lower abs or lower calves or lower biceps or lower eyeballs. The muscle is a single muscle, with heads at 6 intracostals, the clavicles, and the sternum, and it inserts at the humerus. What happens with declines is you do, in fact, to a small degree, better engage the intracostal heads, but more importantly, the positioning is such that you are simply not going to have your elbows as far flared, which means less engagement of the triceps and biceps, and less load transferred to them.
If you really want the absolute "king" of chest exercises, fall back on the same wisdom we use for all other muscle groups - work the muscle across its functional plane. For chest, this is rotating the humerus, so we're talking pec deck and cable flys. The pec deck is a no brainer, but the cable fly fixes the issue dumbbell flys have of decreasing resistance toward the top of the rep. Since it's a cable, the strain as you work through the movement is
always directly across the pectoral's plane - the muscle is trying to rotate the arms in, and the cables try to pull them back the other way. From there, yes, inclines will hit the clavicular head a bit more, and yes, declines make the form easier to maintain, and yes, flat bench is effective.
TL;DR - Made-up bodybuilder muscle parts are made-up, declines little bit better than flats, cables are king.
