I stand by what I wrote. Yates gained muscle weight in the extreme when he made the switch to one set a body part. Right around the night of the champions he was doing 2 sets per exercise. Don't count his warm up sets. Mentzer improved after he left volume. He won his first major contest doing a low set routine the Mr. America. Regarding Dave M using volume realize he competed as a 15 year old. The majority of his training career was with HIT.
If you want to make a case for volume use Casey Viator the poster boy for HIT. In his best ever condition in the 1982 Olympia he was doing volume. A facebook friend of mine that died said he saw him train for that contest and it was always volume. One bodypart he decided to count sets and if my memory serves me he counted 16 sets.
I'm going to a competition in 2 wks
where I hope there will be a training partner of Dorian's from back in
the late 80's & early 90's he trained with Dorian for the night of the champions
, he was on the same sponsorship team as Dorian & 3 others.
Hell maybe even Ernie Taylor might be there & I'll ask them both exactly how they saw Dorian train.
He worked for me in back then & I clearly remember him saying they had
regular blood tests & Dorian's all ways came back better than everyone else's
Including the 2 women on the Team, no it's not proof of how much or how little PED's he was using only it's a fair indicator.
Personally I don't care how Dorian trained as it has Zero effect on Me.
Whatever he was doing certainly worked very well for him,
& that should be the goal for all of us - Doing what produces the best results
for ourselves not bitching over how someone else did or did not train.

waste of Fucking time & energy that is.
Concentrate on yourself & when you get to Dorian's level then Tell
everyone what training methods got you there.