Assuming that a harmonious body development cannot disregard, more often than not, the "training of the back and shoulders, excluding the main movements that activate them from the routine would also be incorrect from a functional point of view. This is because - in a way" simplistic "- it could be said that these districts (therefore not necessarily large dorsal per se) are indispensable for opening the clavicles, adduction and elevation of the shoulder blades.
More precisely, the dorsal is responsible for extension, adduction, transverse extension - also known as horizontal abduction - flexion from an extended position and internal (medial) rotation of the shoulder joint. It also has a synergistic role in extension and lateral flexion of the lumbar spine.
IMPORTANT! By bypassing the scapulo-thoracic joints and inserting directly into the spine, movements of the lats on the arms can also affect the movement of the shoulder blades, such as their downward rotation during a pull-up.
For further information: Rowing with Barbell and Dumbbells ).
Located in the back, this typically flat muscle extends to the side behind the arm and is partially covered by the trapezius near the midline.
It is inserted on the spinous processes of the vertebrae (from the sixth and seventh up to the lumbar thoracic fascia and the iliac crest) and on the small tubercle of the head of the humerus.
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