Interesting stuff. Makes me want to play around with like 6 sets of 6 with stuff left in the tank every set. Would probably feel incredible after the workout too without having the fatigue, but having the endorphins etc
That's how I'm squatting right now, pretty much - I do less than 50% of the rep maxes at 70-75-80%, cycling between each intensity range, per workout
Although I may drop the 80% range soon, and use 65% sets of 7, dropping to 6 after 3 sets, 70% sets of 5, dropping to 4 after 3 sets... and 75% sets of 4 dropping to 3 after 3 sets.
I can feel the bar speed slow down, and a bit more strain right at that point, which is when the largest, fastest, and less fatigue resistant muscle fibers are starting to drop out, hence the slower bar speed.
Training this way suits me better, as heavy loads spook me, and burn me out fast, and cause me more aches and pains.
Plus I train after BBall and jumping
So in theory if you stop all work sets at that point, your only developing the largest and fastest fibers, while keeping the slower ones mostly untrained...
So they are less likely to get in the way of explosiveness, and receive less damage so recovery overall is also better
That's the training model I'm subscribing to right now, anyway.