Which assessment specifically measures speed?

The assessment that specifically measures speed is the 10-60 yard dash. This test is designed to evaluate an athlete's ability to sprint over a short distance, providing a reliable measurement of their acceleration and maximum speed. It focuses on the athlete's raw speed and allows for a clear assessment of their performance in a situation that closely mimics competitive sports scenarios, where rapid movement is essential.

In contrast, the sit and reach test evaluates flexibility, particularly in the hamstrings and lower back, and is not related to speed measurement. The Cooper's 12 minute walk/run is a test of aerobic endurance rather than speed, as it determines how far a person can run or walk in a specific amount of time. Lastly, the hypertrophy phase refers to a period in training focused on muscle growth and does not pertain to a specific assessment of speed.