I think this a really interesting topic. All the articles I have seen are just correlation evidence at best.
I am not sure about the volume part because there are lot of low volume programs like DC, HST. And most natural bodybuilders don’t go more than 8-14 sets for a body part. I am not sure even if the current drugged bodybuilders do that high of a volume of 20-30 sets per body part. I can see most powerlifters getting 8-15 sets for their bench press muscles with their assistance work.
And I am yet to see a study which showed greater muscle growth or protein synthesis with high reps compared to low reps.
And appearances can be deceiving. What we need is study looking at the FFM of bodybuilders and powerlifers. From what I remember that was only one or two pound difference in one of the studies which compared the two. If you take a picture of a muscular bodybuilder and a powerlifter, that do not means it is the training that made the difference. If I show a powerlifter who cut down and looked muscular, will it prove the fact that powerlifters are as muscular as bodybuilders? Probably not.
And there might be an increase in FFM in bodybuilders than powerlifters. But this I think is largely because bodybuilders focus on muscles like calves, forearm , traps and such which powerlifters don’t bother to workout or don’t get enough tension because of the technique. I just think the metabolic accumulation, hormone effect, mind-body connection, short intra-rest time, manner of execution doesn’t really add much to increase in muscle.
I just can’t see that most powerlifters have 5-15 lbs of untapped muscle because of their training. And if it were true, every powerlifters could add atleast 50 lbs to their bench press if they focussed on a bodybuilding type chest training for a few weeks. I don’t think that’s going to happen because most have maxed out their genetic limits for muscle in that particular muscle group. Hence they take steroid or eat and get 300 lbs and move to the heavy weight category.
What you guys think?