Have you actually read the study? Or do you have any background in a scientific degree/psot-grad and know how to pick at papers and find the flaws?
>Forty-nine healthy young men who had been engaging in RT for at least the past 2 yr.
Already resistance trained; was their previous weight training method recorded accurately? No.
>12 week longitudinal study
Is this enough to determine such an outcome? For 12 weeks, sure.
>Dietary records. Dietary intake records were collected at 0, 3, 6, 9, and 12 wk
Great, but was the diet standardized and was the supplementation taken standardized?
Superficially interesting paper but it has its limitations and flaws, as does every research project. True results would require a longitudinal study, or cohort with intervention, of more than a few years to really determine said outcome.
Research is like that, though - I'm a genticist with a sports science background and doing undergrad & masters projects were always faced with those annoying limitations due to grants not being big enough, or the group supplying the grant want a certain deadline, or the experiment wasn't designed as well as it could have been.
Fact is, I've made the majority of my gains through strength training and little through volume training. When I have trained high volume with a lower perecentage of my 1RM, I did not make any gains in strength and little in increased myonuclei content. How do I know? Study I participated in, was a 20 week long study, cohort. I did the high volume training. Sadly didn't get published as it never had enough participants due to a poor recruitment method at the PhDs hand. Shame really, would've been interesting, though I'm not really keen on having another muscle biopsy again.
Matter of the fact is, strength training will exhibit profound strength gains while simutaneously causing hypertrophy, it is ideal to follow, especially for load on the skeletal system & joints.