Resting Metabolic Rate Test Instructions

RELAX: This test measures testing metabolic rate. It is important that you be able to reach a resting state during your test. You should avoid activities that will prevent you from relaxing (such as exercise or stressful situations) for at least four hours prior to your test. Digesting a large meal, as well as taking stimulants, such as caffeine, can raise your metabolic rate and should be avoided prior to your test.

SIT: Once you arrive, you will be able to sit comfortably while being tested. The technician will place a nose clip on your nose and you will be given a disposable mouthpiece to breathe through. This mouthpiece is connected to the machine by a hose that will measure how much oxygen you are breathing out. It is very important that you breathe only through the mouthpiece so this measurement will be correct. Both the mouthpiece and the tubing are single use items that will be used only for your test and then discarded.

BREATHE: Finally, you just sit back and breathe. The indirect calorimeter will indicate when it has calculated your metabolic rate. The test typically takes anywhere from 5-10 minutes. The more relaxed and even your breathing, the quicker the machine will be able to determine your metabolic rate. It will then print out your results.