PACER, the 20 m Shuttle Run Test, or the multi-stage fitness test, is a running test used to estimate an athlete's aerobic capacity. The test requires participants to run 20 meters back and forth across a marked track keeping time with beeps.
The beep test, also known as the PACER test or PACER Progressive Aerobic Cardiovascular Endurance Run the 20 m Shuttle Run Test (20 m SRT), or the multi-stage fitness test is a running test used to estimate an athlete's aerobic capacity