Using the latissimus dorsi to pull down, in conjunction with external rotators, in a lengthened position can help strengthen muscles through full ranges of motion.

“i'm almost using the lat to pull it down correct you're using the lat and some of the other external rotators here's my major here and what we're doing is basically putting them in a lengthened position so i'm actually stretching that muscle a little and then i'm making it contract and so what that's going to do is it's going to allow my body to understand that this length needs to adapt to while at the same time correct we're strengthening full ranges of motion we're progressing towards that”