The FitnessGram ™ pacemaker test is a multi-stage aerobic test that becomes more difficult as the test progresses. The 20-meter pacemaker test will begin in 30 seconds. Line up at the beginning. The speed started slowly, but accelerated every minute after hearing this signal. \[Beep\] Every time you hear this sound, you should complete a lap. \[ding\] Remember to keep walking and run as long as possible. The second time you fail to complete a lap before speaking, the test ends. The test will begin with the word start. Prepare and start.