Straw Man,that`s some old school training articles/principles....thanks for sharing them.
I used to train like that years ago with my partner.......people would say,"Wow,you guys are done already" ??
We had done so much intense work, in such a short amount of time, that their two hour sessions would pale by comparison.
I always, to this day,unless going super heavy (for me anyway),adhere to the Vince Gironda saying that is to "do the most work in the shortest possible amount of time".
As an example, if person A and person B are both the same age,strength,and both do the same exact workout using the same exact sets and reps with the same poundages,but it takes person A only 45 minutes to complete his training,while person B takes 90-120 minutes.........all other things being equal,person A trained harder as he did his workout in far less time.........."Intensity Of Effort", is what Vince called it.