Pectoralis major
The latissimus dorsi, and the trees major, which is known as the " little lat", both adduct, extend, and internally(medially) rotate the shoulder. The long head of the triceps also extend and addicts the shoulder, while also being an elbow extensor
The optimal position for shoulder exercises in the scapular plane is with the arms raised at a 30-45 degree angle in line with the shoulder blades. This position helps to reduce the risk of shoulder impingement and allows for proper muscle activation during the exercises.
Which muscles? If all the muscle are clenched it will be perfectly still but that could be in any position depending on what position the arm was in ot start with.
The scientific name for the shoulder muscle is the deltoid muscle.
Because shoulder horizontal adduction is performed when the arm is horizontal position (i.e., the elbow is level with shoulder) and adduction is movement toward the center of the body, shoulder horizontal adduction is performed primarily by pectoralis major and anterior deltoid, with an assist by latissimus dorsi.
Inn other words muscle flexing can be called muscle shortening and extension when muscle is elongating. For example when you bend you arm towards your shoulder your bicep muscle is shortening and you can feel a bump. When you extend your arm you can feel that the bump is stretching out and disappearing, that is muscle extension.
The deltoid muscle is located around the shoulder at the top. There is a deltoid muscle that is located on each shoulder.
Tendonitis is inflammation, irritation, and swelling of a tendon, which is the fibrous structure that joins muscle to bone. While Tendonitis can effect any tendon it is not common to find Tendonitis in the deltoid tendon. The deltoid muscle is a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm. Most often pain in the shoulder has to do with the Rotator Cuff muscles or arthritis in the shoulder joint.
which shoulder muscle allows you to adduct your arm
Yes, the shoulder press machine is effective for building shoulder strength and muscle. It targets the deltoid muscles in the shoulders and can help improve overall shoulder stability and muscle development.
the shoulder muscle extends the arm
The latissimus dorsi, and the trees major, which is known as the " little lat", both adduct, extend, and internally(medially) rotate the shoulder. The long head of the triceps also extend and addicts the shoulder, while also being an elbow extensor