Latissimus-what??
Using Your Lats in Swing Dancing
Let’s talk lats! The full name of the muscle in question is the latissimus dorsi (see figure 1). The full importance of using the lats properly is probably unparalleled in dancing lindy hop. It gives you greater control and connection, improving your ability to lead and follow almost instantly. As a beginner or intermediate dancer, how many times in a private lessons or classes has your teacher said, “Don’t let your shoulder out!” And how many times have you thought to yourself, “How the heck do I do that??”
Whether you’ve figured out the whole shoulder alignment thing or not, I’ll explain the structure and function of the lats as they pertain to lindy hop. Then you’ll dance better and get hurt less. And then you can tell your friends, because good memes should travel far and wide.
Anatomy
Latissimus dorsi attaches at the head of the humerus (the very tippy-top of your arm just below the shoulder joint) and down into the mid to lower spine, top of the pelvis, and the bottom few ribs. It even has a little bit of attachment to the bottom of the shoulder blade. The darker red region in figure 1 is the latissimus dorsi. But don’t ignore the gray stuff at the bottom! It’s connective tissue. When engaged, the lats are a direct connection from the shoulder joints to the center of gravity, your sacrum (see fig. 2).

Figure 1: Anatomy
Movements in which lats are crucial include climbing and pull-ups, and pressing downward as you would if you were suspending yourself between two gymnastic bars. Or if you were a massage therapist, sinking your elbow into a client’s hamstring.
Why use lats?
As mentioned above, the lats are a direct connection from shoulder to center, but only act as such if engaged. In swing dancing, the idea is to be connected center-to-center with your partner. Though you may have never stopped to consider it, “connection” has a very literal connotation. When you engage lats, a few things happen:

Figure 2
- Your shoulder has a direct connection to your center (see fig. 2).
- Your shoulder girdle remains centrally located in relation to your ribcage (as opposed to letting it come forward).
- Only the range of motion in your ball-and-socket shoulder joint (the glenohumeral joint) is used. Essentially the same point as No. 2.
Center-to-center is not figurative. When you move (or are moved by) your partner in the swingout, you’re not signaling or making a suggestion, or as a follow, making an educated guess. Ideally you are both engaging your lats, and using your other core competencies (eg balance, pulse, alignment, etc) to move or be moved in a literal sense. In open position, full arm extension is limited by engaging the lats to stabilize the shoulder. Your hand then has a clean connection to the shoulder, which has a clean connection to your center. Voila. Now you can do less thinking.
Other muscles that help
Lats are the prime mover when pulling your follow or being pulled by your lead. When you push, or use compression, other muscles are at work. Most of the time in swing dancing, we use tension, or pull. Other muscles, synergists, assist the lats in stabilizing the shoulder girdle: Trapezius, Rhomboid, Pectoralis major. Pec major is the prime move in compression.
What if you don’t use lats?
You can connect to your partner without engaging your lat muscles. For example, you could use your upper back and chest muscles to stabilize your shoulder girdle in a number of positions. The trapezius muscles (see figure 1) attach all the way down to your lower middle spine (T-12). After that, it’s up to your lumbar spine and erector spinae muscles to connect down to your center.
If you don’t stabilize your shoulder at all, you’ll be relying on your muscles to engage at the last moment as reflex when someone begins to pull you. If they fail, you have many connections for the line of pull to travel through before it gets to your center… lower arm, to upper arm, to shoulder blade, to collar bone, to sternum, to upper ribs, to upper spine, through each vertebra, to the sacrum. Yes, there are that many bony connections between your hand and your center!
Using bony connections for a line of pull is generally a dangerous idea. The bones and joints are not constructed in a way that gives them great tensile strength, or weight-bearing ability for that matter. Bones are like the masts of a ship, held up and supported by numerous ropes which need to be properly adjusted (analogous to our muscles and connective tissue). You may have heard that people with loose ligaments are at risk for musculoskeletal (bone, joint, and muscle) injuries. The same is true when tensile force is applied to a joint while the muscles are unprepared to support it. If you have soreness in your shoulder after several hours of lindy hopping, I suggest getting with a qualified teacher to analyze your alignment and use.
To sum up, from a biomechanical standpoint, using the fewest number of connections between hand and center is going to give you the most control over your body, and the safest dance experience.
Finding and Using Your Lats
Now that you’re convinced about the necessity of engaging your latissimus dorsi muscles, let’s get acquainted with them in a physical sense. If you’re sitting now, stand up and assume your best posture. Take either arm and wrap it across the middle of your torso so that your fingers are resting on your side body, just under your armpit. To engage lats, you’re going to press your shoulder down toward the floor. If you were to see this in a mirror, you’d see your shoulder move a few millimeters in a downward direction. Now take a deep breath and stop thinking so hard! If you can’t feel your lats engage, here are a couple of things you may be doing wrong:
- Are you moving your shoulder in a direction other than down? It may sound obvious, but check yourself out in a mirror. Is your shoulder coming forward or up toward your ear? Sometimes it takes a bit of messing around to figure which muscle in your body accomplishes down for your shoulder joint.
- Are you crunching the side of your torso instead of keeping your spine vertical? If your shoulders are no longer level (again, see mirror), reset yourself and try again, this time keeping your shoulders parallel to the floor.
Now try engaging lats on both sides.* Explore the resulting range of motion in your arms. With your shoulder girdle stabilized in this way, you should not be able to (a) raise your arms fully over your head, (b) fully extend your arms at a right angle to your spine, (c) bring your elbows very far behind your back. You may have noticed that your range of motion corresponds with where your “frame” exists for swing dancing. It’s brilliant. Engage two muscles, and several other things fall into place.
*You’ll also necessarily be engaging the other synergists discussed above.

Even monks use their lats when dancing.
Lats and Dancing

Even monks use their lats when dancing.
I’d like to point out that there are times in which you cannot engage the lats, as to do so would restrict your range of motion in a way that’s not useful. For example, there are plenty of times you might like your free arm to extend over your head or behind your back. One notable example is a styling for drags in which the lead moves the follow’s right arm back and forth in a seemingly wild manner. Another example is the 7-8-1-2 swingout variation for leads in which they sweep their right arm over the top and around in a circle, applying their full range of motion and making beautiful lines. Engaging lats to stabilize the shoulder joint would be counter-productive, or potentially hazardous as in the first example.
However, the experienced dancer is ready to engage and connect when necessary. There are a number of connection exercises which can help you translate this into your dancing, which you can get from classes, workshops, and private lessons. Additionally, self-exploration and social dancing are great ways to practice connecting with your latissimus dorsi muscles. With enough attentiveness, you’ll start to get it. And then you may just be amazed at what you can do.
Rebecca Brightly is a Licensed Massage and Bodywork Therapist (LMBT #7763) in the state of North Carolina. She has owned her practice in Durham for the past 2 years. http://rebeccabrightly.com



