@MosMaster I have made a response to you...but it's located in another forum: Body Building, Health, Fitness & Diet ForumIt really does. Funny thing is, I would guess 90% of all "sophisticated" trainers around the world is not even aware of these fundamental principles of human biology when it comes to strength training. And I say that having been a trainer myself for 10+ years.
By all means please try to get your hands on his books if you can. All I know is they can be either hard to get or pricey due to scarcity.
Meanwhile, since you seem interested you can watch the videos of John Heart. He worked closely with Mike Mentzer until his death and been practicing these principles throughout his career:
To dum it down it comes down to the training needs to be IBI (Intense, Brief, Infrequent). Intense in that you go all out of each set performed, brief in that the workout should be around 20-40 minutes max (excluding warmup) and infrequent. And here you need to experiment to find the best frequency that your body has the ability to recover from. As he explains with great examples in the interview.
You find my response here: Answer to @MosMaster regarding: Mike Mentzer's training method.