How is flexibility measured?

• A. 1-mile run
• B. Sit and reach test
• C. Push-up test
• D. Body Mass Index

Answer: (B)

Flexibility is the range of motion available at a joint or group of joints. A standard way to measure it is the sit-and-reach test, which targets the flexibility of the hamstrings and lower back. In this test, you sit with your legs straight and feet against a box or bench, then reach forward along a marked scale as far as you can. The distance you can reach (measured in inches or centimeters) indicates how flexible your hamstrings and lower back are—the farther you reach, the greater the flexibility.

This test is popular because it's quick, simple to administer, and provides a practical snapshot of how well these important muscles move through their range of motion. It’s a focused measure of flexibility for the posterior chain, which is a key component of overall mobility.

In contrast, a 1-mile run primarily reflects cardiovascular endurance, a push-up test evaluates muscular endurance of the upper body, and Body Mass Index assesses body composition rather than joint range of motion.