In a rotation test, hands being far from the wall indicates underactivity in which of the following muscles?

In a rotation test, when the hands are positioned far from the wall, it typically indicates an underactivity in the subscapularis and teres major muscles. These muscles play a vital role in internal rotation and stabilization of the shoulder joint. Their proper functioning helps the shoulder maintain optimal positioning during rotational movements. If these muscles are underactive, it can lead to compensatory movement patterns, resulting in an inability to keep the arms close to the wall during the test.

The subscapularis is crucial for internal rotation, while the teres major assists in various movements of the shoulder, including extension and adduction. When these muscles are not functioning adequately, it might lead to poor shoulder mechanics, which can manifest as an inability to keep the hands nearer to the wall during a rotation test, signaling a deficiency in those muscles' strength or activation.

In contrast, other muscle groups mentioned, such as the latissimus dorsi, rhomboids, and serratus anterior, involve different functions and movement patterns not directly linked to the inability to maintain proximity of the hands to the wall during this specific test. Hence, the indication of underactivity is correctly associated with the subscapularis and teres major.