What is the formula for calculating resting energy expenditure?

The equation for males is:

1. 66 + (13.7 x weight) + (5 x height) – (6.8 x age) And for females it is:
2. 655 + (9.6 x weight) + (1.85 x height) – (4.7 x age) The formulas are from Katch, McArdle & Katch (2011).

What are the activity factors for Mifflin St JEOR?

Step 2: Factor in Your Activity

RMR Activity Factor Definition
x 1.375 Light Activity Light exercise/sports 1-3 days per week
x 1.55 Moderate Activity Moderate exercise/sports 3-5 days per week
x 1.725 Very Active Hard exercise/sports 6-7 days per week
x 1.9 Extra Active Very hard exercise/sports and physical job

What is the difference between Harris-Benedict and Mifflin St JEOR?

Both the Harris-Benedict formula and Mifflin – St Jeor formula are commonly used and referenced today. It has been suggested that the difference between the Harris-Benedict and Mifflin-St Jeor equations is around 5%, with a higher accuracy level achieved by the Mifflin – St Jeor formula.

What is resting energy expenditure REE?

Resting energy expenditure (REE) represents energy expenditure while a person lies quietly awake in an interprandial state; under these conditions, approximately 1 kcal/kg body weight is consumed/hour in healthy adults. Energy requirements of specific tissues differ dramatically (Table 4-2).

How accurate is the Mifflin-St JEOR equation?

Of these equations, the Mifflin-St Jeor equation was the most reliable, predicting RMR within 10% of measured in more nonobese and obese individuals than any other equation, and it also had the narrowest error range.

How was Mifflin St JEOR equation derived?

The Mifflin-St Jeor equation was derived from a sample of 498 normal-weight, overweight, obese, and severely obese individuals ages 19 to 78 (44.5+14.1) years (14). The racial composition of the sample was not specified, and the representation of older adults (75 to 84 years) was limited.

What’s my resting energy expenditure?

Harris-Benedict Equation for BMR: Men: BMR = 88.362 + (13.397 x weight in kg) + (4.799 x height in cm) – (5.677 x age in years) Women: BMR = 447.593 + (9.247 x weight in kg) + (3.098 x height in cm) – (4.330 x age in years)

What are resting energy calories?

Your resting calories per day is the amount of energy (in the form of calories) that your body needs to function while resting for 24 hours is known. This is also known as BMR, or Basal Metabolic Rate.

What is a limitation of the Mifflin St JEOR equation for estimating resting metabolism?

What is a limitation of the Mifflin St Jeor equation for estimating resting metabolism? It does not account for a person’s body composition.

How is Ree determined?

The REE can be determined using indirect calorimetry or can be derived from estimating body surface area standard metabolic rate for 24 h.

What is the most accurate calorie formula?

Nowadays, the Mifflin-St Jeor equation is believed to give the most accurate result and, is therefore what we used in this calculator. This BMR formula is as follows: BMR (kcal / day) = 10 × weight (kg) + 6.25 × height (cm) – 5 × age (y) + s (kcal / day) , where s is +5 for males and -161 for females.

What is normal resting energy expenditure?

Resting energy expenditure (REE) represents energy expenditure while a person lies quietly awake in an interprandial state; under these conditions, approximately 1 kcal/kg body weight is consumed/hour in healthy adults.

Is resting energy the same as BMR?

Basal metabolic rate (BMR) is often used interchangeably with resting metabolic rate (RMR). While BMR is a minimum number of calories required for basic functions at rest, RMR — also called resting energy expenditure (REE) — is the number of calories that your body burns while it’s at rest.

Is Mifflin St JEOR the most accurate?

Is Mifflin St JEOR accurate?

One study of high research quality design reported that the Mifflin-St. Jeor equation accurately predicted RMR within +/- 10% of measured RMR in 82% of non-obese adults. Of the remaining 18% errors, 10% were overestimations and 8% were underestimations.

Is BMR and REE the same?

resting metabolic rate. Basal metabolic rate (BMR) is often used interchangeably with resting metabolic rate (RMR). While BMR is a minimum number of calories required for basic functions at rest, RMR — also called resting energy expenditure (REE) — is the number of calories that your body burns while it’s at rest.

How does age affect BMR and RMR?

Age is one of the most important factor of changes in energy metabolism. The basal metabolic rate decreases almost linearly with age.

What is a normal resting energy expenditure?

How does age affect RMR?

Most studies looking at the relation among aging, RMR, and body composition have concluded that RMR is reduced in older age compared with younger age beyond what can be explained by changes in body composition.