Originally Posted by Andrew H. Meador
I understand the bit about sarcomere popping, but this I don't - isn't the catch an eccentric contraction, followed by the stretch-shortening cycle and a concentric contraction? This applies more for the squat versions than power or split versions.
It's a very short eccentric (well, moving under the bar isn't much of an eccentric at heavy weight, and by then you're already pretty much at the bottom).
Plus overall volume is fairly low as well b/c they're working with heavy weights multiple times per day for like 5-6 days a week.