This is why the lats are often broken down into three parts in fitness, the upper, middle and lower lats. While the latissimus dorsi is a single muscle and the entire latissimus dorsi activates for all of the aforementioned functions, certain movements alter which region of the muscle is at the greatest advantage (and thus activated the most). As such, there is no way to completely isolate the lats. Moreover, most compound movements of the lats involve elbow flexion, which means the biceps and forearms will be involved (which is why back and biceps are so often worked on the same day by bodybuilders). It should be noted that most movements powered by the latissimus dorsi also concurrently recruit the teres major, posterior deltoids, long head of the triceps brachii, and other shoulder and scapular stabilizer muscles. The lats also assist in keeping your scapula against your thorax during upper arm movements, as well as other stability roles for your spine.
It’s a super strong muscle that facilitates movements of the arm when your torso is fixed and vice versa. Internal Rotation: Bringing your arm towards the midline of your body (i.e.Extension: Lowering your arm straight down from a raised position (i.e.Horizontal Abduction: Moving your arms out to the side (i.e.Adduction: Lowering your arm toward your body from the side (i.e.It performs these actions in collaboration with the teres major and pectoralis major. The main function of the latissimus dorsi is adduction, horizontal abduction, and extension, as well as internal rotation of the shoulder joint. Only a small part of the lat is covered (by your lower traps) right in the center-middle part of your back. You can feel your lats by simply running your hand along your posterior side from under your shoulder all the way down to your lower back. The latissimus dorsi arises from the spine (T7 all the way down to the L5 vertebrae), thoracolumbar fascia and lower part of the scapula and inserts into the humerus (upper arm bone) underneath the bicep. If developed enough, you’ll have that awesome aesthetic v-taper. When people say “build back width”, they are referring to the lats. In fact, it’s the largest muscle in your entire upper body.
It is the largest and broadest muscle of your back. The word “latissimus dorsi” comes from Latin, with ‘latissimus’ meaning ‘broadest’ and ‘dorsum’ meaning ‘back’. You, of course, have two lats, one on each side of your spine. Your latissimus dorsi, more commonly referred to as the lats, is a big, flat, triangularly-shaped muscle that covers the width of your middle and lower back. Benefits of Performing Exercises For Your Latissimus Dorsi.
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