Which assessment is commonly used to evaluate flexibility?

The sit and reach test is widely recognized as a standard assessment for evaluating flexibility, particularly in the hamstrings and lower back. This test measures how far a person can reach forward while seated with their legs extended straight, providing a clear indication of flexibility in the posterior chain of the body. The simplicity and ease of the test allow for consistent administration, making it a preferred choice in various settings, from schools to athletic training facilities.

In contrast, the other assessments mentioned serve different purposes. The one rep max primarily focuses on strength by measuring the maximum weight an individual can lift in a single effort. The Cooper's 12-minute run assesses cardiovascular endurance, measuring how far an athlete can run in a set time. The stork test evaluates balance and stability rather than flexibility. This specificity of purpose in each test underscores why the sit and reach test is the most appropriate choice for assessing flexibility.