![]() Note that in the BMR/RMR calculator above the lean body mass is automatically calculated using the Boer formula if body fat percentage is not provided. If you know your body fat percentage, lean body mass can be calculated by the following formula: (1 - Body Fat Percentage / 100) x Weight. ![]() Males: Ageīoth the Katch-McArdle and the Cunningham formulas use lean body mass to estimate your resting metabolic rate. Due to lack of availability in many institutions, predictive equations are used to estimate energy requirements. Males: AgeĪs the Schofield equation above was proven not to be very reliable for many, a new series of equations was developed in 2005 which consisted of a database of 10,552 BMR values that had a more diverse set of subjects. Background Indirect calorimetry (IC) is the gold standard for determining energy requirement. This skewed the results for other communities. Demographic and anthropometric data were used to calculate the REE using gender-specific predictive equations3: Mifflin St. However, a disproportionate number of subjects in the data set were Italian men with on average higher BMR values. The Mifflin-St Jeor equation is more likely than the other equations tested to estimate RMR to within 10 of that measured, but noteworthy errors and limitations exist when it is applied to individuals and possibly when it is generalized to certain age and ethnic groups. However, if youre taller, heavier, and more active, you. The Schofield equation was published in 1985 and used by FAO/WHO/UNU (World Health Organization and others). The Mifflin-St Jeor equation takes into account variables that affect metabolic rate across the board.
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