Dorian's training was almost identical to Mentzer's. The difference would be Mike did several warmups typically on the first exercise, then not so much on subsequent exercises- unless it was Squats, deads or power cleans. Mike often trained 3 but no more than 4 days a week. Mentzer trained volume until age 19- about 7 years. He did Jones style after. Dorian did Mentzer style stuff throughout his career. Note- I didn't say later Mentzer stufff. Which became far different after 91-92. I was a client, so I know that in 91 it was 2 days on 1 off, 2 on. 2 off. 2 to 6 sets per body part, to failure AFTER a couple or so warmup sets.