The latissimus dorsi is the larger, flat, dorso-lateral muscle on the trunk, posterior to the arm, and partly covered by the trapezius on its median dorsal region. It is responsible for various movements of the shoulder joint as well as a synergistic role in extension and lateral flexion in the lumbar spine. The most common exercises to strengthen this muscle require pulling, such as, a pull-up or bent-over row.
Relief can be given to this area by breaking down adhesion and scar tissue by use of the TP Massage Ball. An often difficult to reach area of the body can be targeted by isolating the muscle against a wall and with the use of a Baller Block, as seen below.
When performing this manipulation, you will want to lean in the opposite direction, leading with the hand and arm overhead. This will allow you to target areas with tension and discomfort. As you are breaking down the scar tissue and adhesions, make sure you are taking slow deep breaths, which combined with the compression you create, can improve the elasticity of the muscle tissue.