I'm not sure he has all his facts right (above my pay grade), but some interesting commentary:
That's a reasonable conclusion. But.This would seem to make an argument for full body workouts rather than any kind of split. If you're in the gym daily the cortisol levels would stay elevated regardless of muscle groups being worked, right?
Do you do a warmup set before the one working set? Before each working set of every exercise? A general across the board warmup and then just do working sets? What does that look like for you?You will recall from the first video, that Thibaudeau said that myofibril protein synthesis (MPS) drove hypertrophy. On the matter of sets per muscle group (or was it per exercise; Thibaudeau didn't clarify), I recall a piece by Clarence Bass that he wrote a number of years ago addressing the relationship between volume and protein synthesis:
https://www.cbass.com/Volumetraining.htm
He referred to two studies performed at McMaster University in Canada by the same group of researchers. One study found that while 3 sets had a more lasting effect on MPS than 1 set, the other study found that 6 sets did not induce more MPS than 3 sets. So there is a ceiling. Thibaudeau's reference to 6 sets exceeds that ceiling, at least according to these studies.
So single set training seems to make sense, from both an efficacy and efficiency perspective, provided that more than one exercise is done to address any given major muscle group.
Thibaudeau also mentioned that low reps with heavier weights are better than higher reps with lighter weights to build muscle. However, a study conducted several years ago suggests that when subjects lift loads equivalent to 90% of their 1 RM versus lifting a load that represents only 30% of 1 RM, but both 90% and 30% perform to voluntary fatigue, similar increments in the synthesis of new muscle proteins are shown:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2918506/
This is why I mentioned in an earlier post that I took issue with Thibaudeau's suggested volume and rep ranges. What I found most useful from his video was the relative differences in training when natural vs when enhanced, rather than his absolute recommendations.
Just thought I'd clarify the comment in my earlier post.
I’m hardly a worthwhile standard to go by, but to answer your question, my ~HIIT at the beginning of my workout serves as my warmup. I used to do HIIT after the resistance work, but now that I work out first thing upon awakening, I need it to get me going. Also, moving right into the resistance part of the workout about a minute after the HIIT keeps the intensity high throughout the workout.Do you do a warmup set before the one working set? Before each working set of every exercise? A general across the board warmup and then just do working sets? What does that look like for you?