It is a kind of cardiovascular endurance test. The test computes the capability to exercise continuously for extended intervals of time without tiring. The subject (person who is taking the test) steps up and down on a platform at a height of about 45 cm. at a rate of 30 steps per minute for 5 minutes or until exhaustion. Exhaustion is the point at which the subject cannot maintain the stepping rate for 15 seconds. The subject immediately sits down on completion of the test, and the heartbeats are counted for 1 to 1.5, 2 to 2.5, and 3 to 3.5 minutes.