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Metabolic Testing

Measuring Metabolism

How Many Calories Does Your Body Burn Each Day?

About Metabolism. Our metabolism is the engine in which our bodies convert food to fuel. It’s the way our bodies burn calories and how our bodies gain or lose weight. Many factors affect our metabolism such as age, resting metabolic rate (RMR), genetics, weight, body composition, and hormones. Our resting metabolic rate defines the calorie value required by our body to function at rest and makes up 70% of our metabolism. Factors that affect our RMR include sleep, nutrition habits, activity level, stress, inflammation, and body composition.

When you know your individual RMR, the foggy estimation of energy balance for your needs becomes a clear picture. You will have answers to questions like, “what are my caloric needs”, “what caloric ranges will promote weight loss, maintenance or gain for my specific needs”.

In addition to changes in your caloric intake and output, it’s equally important to make changes to factors such as sleep, stress, and body composition. Incorporating strength training into your routine will promote the growth of muscle mass. Finding ways to deal with stressors in your life and tackle sleep issues will make significant increases in your metabolic rate.

About the Test. The MedGem handheld indirect calorimeter is used to measure your metabolic rate. You will be asked to hold the device while breathing into a mouthpiece for 10 minutes. The MedGem will measure and analyze the amount of oxygen consumed to determine your resting metabolic rate. After the test you will review your results with our registered dietitian. She will enter factors related to your body size, sleep patterns, exercise routine, and weight goals to determine your target calorie range. Your 60-minute appointment will also include a nutrition assessment and meal plan to help you reach your new calorie goals.

Re-measure. After following your plan for 12-weeks you may expect a change in your metabolic rate or experience a plateau in weight loss. This is a good time to re-evaluate your caloric needs. Follow-up metabolic testing is offered in a 30-minute appointment. At your follow-up appointment your original meal plan will be updated to meet your new target calorie ranges.

In preparation for the test

  • Do not eat or drink anything for at least 4 hours prior to your scheduled appointment. Water and ice are OK.
  • Do not exercise for 4 hours prior to your scheduled appointment.
  • Do not consume caffeine or nutrition supplements for 4 hours prior to your scheduled appointment.
  • Do not use nicotine for 1 hour prior to your scheduled appointment.
  • Continue to take any prescribed medications.

Metabolic Test Fees

  • 60-minute session with Nutrition Assessment, $130
  • 30-minute session with out Nutrition Assessment, $60

To find out more about the Metabolic Testing program, contact Nutrition Services at Womans Center for Wellness 225-924-8313, or send us an email.