This half-rep nonsense and constant tension nonsense really only started to happen within the last few years. Back in the 50s, 60s and 70s, they mainly used a full ROM on everything. Now guys like Cutler, Jason Huh, do quarter reps because they are lazy. You can get away with being lazy when youre pumping that many drugs in your body. Guys back then used legs drugs, trained harder, full ROM, and looked more impressive.