No offense, but there's tons of issues with that study.
One, age of the men? Some could be declining dramatically in test levels, and pushing those levels far past normal human levels could easily cause growth. Basically bringing them back into their
prime. Also factor in baseline hormone levels of the men. If they had been chronically low test they could basically be going through a mini puberty. I don't know about you, but I grew like a weed well before I started training seriously.
Two, occupations? I have a fairly physical job. If I didn't go to the gym, took 600 mg of test, amd went to work, I would grow. I'd probably grow a lot.
Three, purely anecdotal, I have prejudice against that article because I have seen it quoted many times by 130 lb beginners as an excuse to either start cycling, give up entirely, or attempt to discredit any storoid user's work.
Fourth, all the placebo group lift more than the testosterone group. That lays a foundation for later muscle growth. Do you think the test will allow them to keep increasing in weight by 3 kilos every 10 weeks without training? Besides my personal bias that the idea of growing without getting any stronger would be worthless.