Which test is commonly used to assess muscular endurance in the upper body?

The push-up test is widely recognized as a reliable measure for assessing muscular endurance specifically in the upper body, particularly targeting muscles such as the pectoralis major, deltoids, and triceps. This test evaluates how many push-ups an individual can perform in a certain period, typically within a minute, or until they can no longer maintain correct form. The ability to perform push-ups continuously reflects the endurance of the upper body muscles and their ability to sustain repeated contractions over time.

In contrast, other options focus on different aspects of fitness or target other muscle groups. For instance, the plyometric test evaluates power and explosiveness, the squat test primarily assesses lower body strength and endurance, and the curl-up test, while useful, focuses on the abdominal muscles and thus does not assess upper body endurance. Therefore, the push-up test stands out as the most appropriate choice for evaluating upper body muscular endurance.