Which of these tests would NOT be used to assess flexibility?

The push-up test is primarily designed to assess upper body strength and endurance, particularly in the chest, shoulders, and triceps. It measures how many repetitions can be completed in a specific time frame or how long one can continue performing push-ups at a set pace. This test does not involve measuring the range of motion or the ability of muscles and connective tissues to stretch, which is what flexibility assessments focus on.

In contrast, the sit-and-reach test evaluates flexibility specifically in the lower back and hamstring muscles, while the shoulder flexibility test assesses the range of motion in the shoulder joint. The hip flexor stretch test also targets specific muscle groups to measure their flexibility. Thus, the focus and objective of the push-up test clearly differentiate it from the other assessments aimed at evaluating flexibility.