All individuals have a metabolic rate specific for their body. Testing by indirect calorimetry provides an accurate assessment of Resting Metabolic Rate compared to predictive equations often used to estimate calorie needs. The results are obtained immediately after the 10-minute test and can then be used to determine a plan for achieving goals related to weight loss, gain or maintenance.

An appointment is required and pre-test preparation will ensure accurate results. Please call 573-556-5774 to make an appointment.

What Exactly is an indirect calorimeter?
It is a device that accurately and quickly measures your resting metabolic rate (RMR) and oxygen consumption, or VO2. In just a few minutes, the machine calculates your metabolism to determine your body’s internal efficiency and helps your healthcare provider understand your caloric needs for effective medical nutritional therapy and weight management.  Inadequate nutrition can prevent you from reaching your health goals. In addition to weight management, this test provides the information you need to achieve greater personal control of weight-related conditions such as diabetes, chronic obstructive pulmonary disease (COPD), burns, liver disease and sleep apnea.

Where Can I get My Metabolism Measured?
Testing is available at JCMG Weight Treatment Center. Our healthcare professionals can measure your resting metabolic rate using FDA-approved equipment. Knowing how many calories you burn each day is the first step toward adjusting your food intake so that you can more accurately achieve your health goals.

How Do I Get My Results?
The test takes between 5-10 minutes and you will receive your results immediately after the test. Before you leave our facility, the professional who administered the test will give you a written record of your results.

How Do I Need to Prepare for the Test?
To obtain a true resting metabolic rate, it is important that your body is in a calm and relaxed state. If you have been active, stressed, or if you have recently eaten or exercised, the measured RMR will be accurate for that condition but not representative of your actual RMR.

Ideally, RMR is measured 8-12 hours after eating or exercise. If this is not possible, the following conditions should be met in addition to sitting quietly and relaxing for 15 minutes prior to the test:

  • Avoid eating or drinking beverages that contain calories or caffeine for 2-4 hours prior to the test.
  • Avoid exercising (cardiovascular and strength training) for 4 hours prior to the test.
  • Avoid nicotine consumption for at least 1-2 hours prior to the test.
  • Avoid taking nutritional supplements and medication that contain ephedra, Ma Huang, or pseudoephedrine for at least two hours prior to the test.
  • Metabolism is different among individuals and is influenced by many factors; therefore you should measure your metabolism regularly during a weight management program. Metabolism can vary from day to day and within the same day. That’s why it’s important to measure RMR under similar conditions at the same time of the day, in the same position, and fully relaxed. If normal conditions for you include taking nutritional supplements, caffeine, nicotine, or medications, then it is important to acknowledge this as part of your daily routine.

    What Do I Do With the Results?
    A “self-start” booklet will be provided with your test. If you desire additional assistance by a registered dietitian, please state your request at the time you make your appointment for the test. This is available for an additional fee.