I didn't find the abstract very clear but you won't get much argument from me here. I definitely favour MJ exercises. I have two Single Joint exercises in my routine excluding trunk. Dorian Yates said bodybuilders have way better lateral deltoid development than other iron athletes. So I choose to to do Side Laterals to supplement my Overhead Press; the shoulder is so complex I might not be quite getting the right angle to maximise side deltoid from pressing.
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I used a routine similar to what you specify earlier this year when I decided to reduce my body fat. I decided to do it fast and not worry about what was fat and what was muscle. I knew I could easily regain any muscle tissue I lost once I went hypercalorific again. I did 7 single sets at similar slow speeds. I just wanted to keep it brief and put tension through my muscles while shrinking down. I'm pretty sure Mentzer did similar when he got fat after an injury enforced layoff.
In the eighties I used 12 sets of biceps three times a week and got very good results. So 36 sets a week!
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I used a routine similar to what you specify earlier this year when I decided to reduce my body fat. I decided to do it fast and not worry about what was fat and what was muscle. I knew I could easily regain any muscle tissue I lost once I went hypercalorific again. I did 7 single sets at similar slow speeds. I just wanted to keep it brief and put tension through my muscles while shrinking down. I'm pretty sure Mentzer did similar when he got fat after an injury enforced layoff.
In the eighties I used 12 sets of biceps three times a week and got very good results. So 36 sets a week!

And what if you were to do that now?