![]() ![]() Weight also was closely correlated with REE (R2 = 0.56): REE = 15.1 x weight + 371. The calculation of TDEE is done with the Mifflin St. Fat-free mass (FFM) was the best single predictor of REE (R2 = 0.64): REE = 19.7 x FFM + 413. Jeor formula, which finds the basal metabolic rate, or BMR, first, and then multiplies. The Mifflin-St Jeor equation is seen by the nutrition community today as the standard in calculating BMR. The Harris-Benedict Equations derived in 1919 overestimated measured REE by 5% (p less than 0.01). Your BMR does not include the calories you burn from normal daily activities or exercise. The inclusion of relative body weight and body-weight distribution did not significantly improve the predictive value of these equations. ![]() In 1990 the Mifflin-St Jeor formula was introduced. Simplification of this formula and separation by sex did not affect its predictive value: REE (males) = 10 x weight (kg) + 6.25 x height (cm) - 5 x age (y) + 5 REE (females) = 10 x weight (kg) + 6.25 x height (cm) - 5 x age (y) - 161. The BMR Calculator will calculate your Basal Metabolic Rate (BMR) the number of calories youd burn. Multiple-regression analyses were employed to drive relationships between REE and weight, height, and age for both men and women (R2 = 0.71): REE = 9.99 x weight + 6.25 x height - 4.92 x age + 166 x sex (males, 1 females, 0) - 161. Normal-weight (n = 264) and obese (n = 234) individuals were studied and REE was measured by indirect calorimetry. The Mifflin-St Jeor Equation is the most commonly used one for BMR calculators (and the one that the BMR calculator on this page uses). Your BMR does not include the calories you burn from normal daily activities or exercise. It represents the minimum amount of energy needed to keep your body functioning, including breathing and keeping your heart beating. A predictive equation for resting energy expenditure (REE) was derived from data from 498 healthy subjects, including females (n = 247) and males (n = 251), aged 19-78 y (45 +/- 14 y, mean +/- SD). Your BMR (Basal Metabolic Rate) is an estimate of how many calories you'd burn if you were to do nothing but rest for 24 hours. ![]()
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