The Mifflin-St Jeor equation is a widely used tool to determine the resting metabolic rate [RMR], which is defined as the number of calories burned while the body is in complete rest.
RMR is also known as resting energy expenditure [REE]. The equation was developed by MD Mifflin and ST St Jeor and first introduced in a paper published in 1990.
There are several equations for measuring RMR, including the most popular Harris-Benedict equation which was developed in 1919 and revised for accuracy in 1984.
A comparative study of four predictive equations found that the Mifflin-St Jeor equation is more likely than the other equations to predict RMR to within 10% of that measured.
Here’s the Mifflin-St Jeor Formula
Females: (10*weight [kg]) + (6.25*height [cm]) – (5*age [years]) – 161
Males: (10*weight [kg]) + (6.25*height [cm]) – (5*age [years]) + 5
Multiply by scale factor for activity level:
Sedentary *1.2
Lightly active *1.375
Moderately active *1.55
Active *1.725
Very active *1.9
The Microlife BodyGem and MedGem indirect calorimetry devices measure your clients Resting Metabolic Rate, to optimize their weight loss results.
Instead of estimating RMR with a formula, the BodyGem and MedGem scientifically measure a clients Metabolic Fingerprint, that is unique to them.
For the best care, the American Dietetics Association recommends using indirect calorimetry to measure RMR for the most accurate assessment of nutritional needs.
The BodyGem and MedGem are the same type indirect calorimeter. They have the same functionality, accuracy and reliability.
The difference is that the MedGem is a FDA 510K-cleared, class II, medical device, which allows licensed clinicians to make insurance claims on their measurements.
Get more information on the BodyGem and MedGem indirect calorimeters
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