Shoulder Upper Back Muscles Working in a Dead Lift?

If you can't tell how much lumbard and thoracic flections taking place togin a position to pull from the floor, then you don't have a phone. The proposal is that these upper back muscles should be worked in a concentric, eccentric faction. When the normal function of those muscle groups is to hold the scapule in isymmetric position. They work e symmetrically. Now you're dead lift in two 50, so you haven't got a dead lift. Al right. What do you suppose will happen to the upper back muscles when you finally start adding? Ten pounds, il work out to your dead lifts. And then five pounds, ill work