Resting Metabolic Rate Testing

KORR™ Resting Metabolic Rate Testing (RMR)


Metabolism, quite simply, is the conversion of food to energy.

Why Test RMR to Manage Weight

Proof of “normal” metabolism

Most people who struggle with their weight are convinced they have a slow metabolism. The truth is that statistically, most individuals with excess weight have average or higher than average metabolic rates. Taking a measurement is really helpful in determining how many calories an individual needs to get into their optimal weight loss zone.

Metabolic rate is a measure of how much food, or fat, is converted to energy in a day. Resting metabolic rate (RMR) is the measurement of how much food, or energy, is required to maintain basic body functions such as heartbeat, breathing, and maintenance of body heat while you are in a state of rest. That energy is expressed in calories per day. So an RMR test shows how many calories you burn at rest, doing nothing more than sitting in a chair.

Indirect calorimetry (a measurement of metabolic rate) relies on the fact that burning 1 calorie (Kilocalorie) requires 208.06 milliliters of oxygen. Because of this very direct relationship between caloric burn and oxygen consumed, measurements of oxygen uptake (VO2) and caloric burn rate are virtually interchangeable.

Oxygen uptake requires a precise measurement of the volume of expired air and of the concentrations of oxygen in the inspired and expired air. The process requires that all of the air a person breathes out be collected and analyzed while they rest quietly. The KORR™ indirect calorimeters contain a precision air flow sensor that measures the volume of expired air, and an oxygen sensor that measures the concentration of oxygen. Once the factors of humidity, temperature and relative humidity are accounted for, the KORR™ instrument provides the most accurate results available in a compact metabolic analyzer.

To learn more about getting this test, book an initial RMR appointment to find out the criteria to get an accurate result.