Which of the following is an example of a muscular endurance assessment focused on "amount of repetitions"?

The pull-up test is an excellent example of a muscular endurance assessment that focuses on the "amount of repetitions." This test requires an individual to perform as many pull-ups as possible within a set time frame or until they can no longer do so, thus measuring the endurance of the upper body muscles, particularly the latissimus dorsi, biceps, and shoulder girdle muscles.

In this context, muscular endurance is defined as the ability of a muscle (or group of muscles) to sustain repeated contractions over time. By quantifying the number of repetitions performed, the pull-up test effectively assesses how long the muscles can continue to exert force before fatigue sets in.

Other options involve different types of assessments that do not primarily measure endurance in terms of repetitions. For example, the deadlift test measures maximal strength rather than the ability to sustain repeated contractions. The static squat test assesses isometric strength rather than endurance through repeated movements, and the vertical jump test evaluates explosive power instead of endurance capacity. Therefore, the pull-up test stands out as the relevant option for assessing muscular endurance based on the number of repetitions completed.