Yeh but anyone doing strength training has to rest for longer than 60 seconds... usually 90-120+ seconds required for strength. There's tons of studies, high test response when lifting very very very heavy (requiring lots of rest). The difficulty is seeing who the test group was.
Yes, low rest lifting can be great for hypertrophy routines, and other things.
Cholesterol is important for test production... proper food intake is important, sleep, hydration, your mental health, so many things... too much of any one thing requires a huge amount of knowledge and adaption, since everything else will shift. If you stop eating carbs, you have to be masterful about your diet and workout routine in response to that change. If you start eating a ton of protein, you have to be smart about when you eat that protein, what you eat other than just that extra protein, and how you work out (one of the main focuses of anyone building muscle though). Any major change in any direction is going to demand knowledge (or dumb luck)... So if you start training with low rest all the time, you really can't expect high test production to continue forever, for your body to keep growing, and for gains to just keep coming. You'll hit a plateau if you don't masterfully approach the major change to your workout routine.
Major changes are important in order to overcome barriers. Strength training is a major change to a workout routine. Dumping carbs and getting caloric intake lower can be a major change. Etc, etc. It's all useful to a rounded training routine, but it's probably not advisable to permanently adopt something that should be done temporarily, or in a time-cycle of some sort.
This post was edited by Canadian_Man on Feb 3 2015 07:51pm