Originally Posted by
quikky
I would think the second layback is bringing more pectoral involvement into the movement, and is also reducing the amount of work the triceps and deltoids have to do, by both, placing the body under the bar to involve the hips, as well as allowing the deltoids and triceps to extend more in the process as the distance between the shoulder and the bar is rapidly increased. In a way, the second layback is sort of like a jerk, in the sense that the body is rapidly placed lower under the bar to allow the arms to extend more under the bar, thus allowing the lower body to then contribute to lock-out.