A rotation chest pass in a power training context uses a pivot of the back leg to generate rotational force.
Proper mechanics require triple extension-simultaneous extension at the hip, knee, and ankle-to produce maximum power from the lower body through the kinetic chain. This extension helps transfer force from the ground through the core to the upper body and into the throw. NASM emphasizes that triple extension is critical in movements involving force generation like sprints, jumps, and rotational throws. Triple flexion is the opposite movement (hip, knee, ankle flexion) and occurs during load absorption phases.