For 8x8 with 30 seconds rest, I finished with the quite-light:
Smith CGBP: 125 lb, or 41% 1RM (of 305)
ATG Squat: 115 lb, which is only 31% (of 370) if figuring only the barbell, but if figuring the legs are also lifting say 100 lb of bodyweight for a total of 215 “really” being lifted, then this would be 46% 1RM where the 1RM also has that 100 lb added in. Not that I am sure that that method is exactly valid.
DL: 165 lb. Relative to my 1RM some months back, this would be 35% (of 475.) However I had been unable to train DL or Romanian DL at all for months, so I am guessing the most I could lift now, if not for the rotator cuff problem making it foolish to try, might be 400 lb. If figuring from that estimate for doable-but-for-being-foolish current best-guess max, then that is 41%.
I do think I look fuller in the mirror, but there are no tape measure changes. However the part that looks most improved – upper chest – wouldn’t show up on the tape anyway.
I did however now hit a surprise 14RM today (190) in the Smith CGBP, using a weight I’d expected to get only 2 sets of 10 with (instead got the planned 10 and then the 14.)
It probably wouldn’t have happened without the 8x8 program.
Huh! (Hadn’t measured this till you asked about changes.) Calves are now the WORST, on the tape measure, that they’ve been in who knows how long. Oh well, maybe this still primes for later growth.
On doing 8x8 DL’s at 50% 1RM: I dunno. On the one hand I believe some could. Some just don’t seem to have to breathe that hard regardless of the vast amount of work they are doing. I don’t know how that is, but for example in the video of Tom Platz squatting 30-something reps deep with over 500 on the bar, he doesn’t seem to be breathing very hard either during or afterwards. I can’t conceive of how.
Doing 64 total reps in 7 minutes 30 seconds (approximately) at 50% 1RM is just as much work done in that length of time as doing say 40 reps at 80% 1RM in that time frame. Or say 8 sets of 5 with something like 45 seconds rest inbetween. Fierce. Who can crank out multiple sets of 5 at 80% 1RM with that little rest?
Yet there was a fellow here who posted a video of himself doing 40 reps with 405 taking only a matter of several seconds rest between reps, with the entire thing I think taking less than 8 minutes. And he didn’t seem to be breathing up a storm. I don’t know how.
It seems to me that 50% would be quite ambitious with only the 30 seconds rest.