Which of the following muscles is commonly assessed during a sports massage of the shoulder?

The deltoid muscle is commonly assessed during a sports massage of the shoulder due to its critical role in shoulder movement and stabilization. This muscle is a large, triangular muscle that covers the shoulder joint and is responsible for a variety of actions, including arm abduction, flexion, and extension. Because the deltoid is heavily engaged in most upper body movements, including sports activities, it is frequently evaluated for tension, tenderness, or pain during a sports massage session.

Focusing on the deltoid allows therapists to identify any issues arising from overuse or strain, which is particularly relevant for athletes or individuals who perform repetitive shoulder activities. Assessing this muscle can lead to effective treatment strategies to enhance performance, reduce discomfort, and improve range of motion.

In contrast, the other muscles listed are not typically the primary focus during shoulder assessments. The extensor carpi radialis and flexor carpi ulnaris are primarily involved in wrist and hand movements, while the adductor magnus is located in the thigh and influences hip movement. Their functions are less directly related to shoulder mechanics, making them less relevant for assessment in this context.