While longer ranges of motion (ROM) produce more muscle damage than shorter ones, full ROMs do not *always* cause more muscle growth than partial ones. Partial ROMs probably produce greater levels of muscle growth when the muscle has a very long internal moment arm length (leverage) in the middle of the exercise ROM, because this would force the full ROM exercise to use a load that is too small to keep tension on the muscle at all times. Therefore, ROM also needs to be considered on a muscle-by-muscle basis.
