What is the Harris Benedict equation used to calculate?

basal metabolic rate
The Harris Benedict equation is a calorie formula using the variables of height, weight, age, and gender to calculate basal metabolic rate (BMR). This is more accurate than calculating calorie needs based on total body weight alone.

What is the formula for calculating calorie intake?

To determine your total daily calorie needs, multiply your BMR by the appropriate activity factor, as follows:

If you are sedentary (little or no exercise) : Calorie-Calculation = BMR x 1.2.
If you are lightly active (light exercise/sports 1-3 days/week) : Calorie-Calculation = BMR x 1.375.

What is BMR Harris Benedict?

Your Basal Metabolic Rate (BMR is the amount of calories you would burn if you were asleep all day. The Harris Benedict Equation determines your total daily energy expenditure (calories). This tool then uses the Harris Benedict Equation to determine your total daily energy expenditure (calories).

Is the Harris Benedict equation accurate?

Of the predictive equations tested, the Harris-Benedict equation (mean difference: -14.8 kcal/day, RMSPE: 195.8 kcal/day, mean % difference: 0.1%) was the most accurate and precise, but accuracy in prediction of the equation were only 35.7%.

How do you use the Harris Benedict equation and what do the results mean?

When you use the Harris Benedict Equation you take your BMR value and multiply it by a number that corresponds to your activity level. The number that results from multiplying your BMR to your activity level is your recommended daily calorie intake to maintain your current body weight.

How do you calculate VO2 energy expenditure?

VO2= (10.8 x watts) / M (wt. in kg) + (7)

To calculate the energy expenditure of a 62 kg woman cycling at a work rate of 450 kgm.min:
VO2= (1.8 x 450)/ 62 + 7.
VO2= 810/62 + 7.
VO2= 13 + 7.
VO2= 20 ml/kg/min.

How do I calculate my BMR calorie deficit?

How to Calculate a Calorie Deficit | 3 Steps

Men: BMR = 10 x weight (kg) + 6.25 x height (cm) – 5 x age (years) + 5.
Women: BMR = 10 x weight (kg) + 6.25 x height (cm) – 5 x age (years) – 161.
500 calorie deficit per day = 3,500 calorie deficit per week.
700 calorie deficit per day = 4,900 calorie deficit per week.

How is BMR activity level calculated?

Men: BMR = 66 + (13.7 x wt in kg) + (5 x ht in cm) – (6.8 x age in years) Women: BMR = 655 + (9.6 x wt in kg) + (1.8 x ht in cm) – (4.7 x age in years) *note: 1 inch = 2.54 cm and 1 kilogram = 2.2 lbs. Example: You are a 30 year old female. You are 5’6″ tall (167.6 cm) and weigh 120 pounds (54.5 kg).

What is the most accurate BMR equation?

Mifflin-St Jeor equation
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.

How do you calculate energy expenditure from VO2 and VCO2?

Weir equation used to calculate energy expenditure:

Energy expenditure = (3.9VO2 – 1.1VCO2) – 2.17 (urinary nitrogen)
Abbreviated Weir Equation = used to calculate REE: REE = (3.94 x VO2) + (1.1 x VCO2)

How do you calculate gross energy expenditure?

Energy Expenditure in Physical Activity

Total (gross) – Resting energy expenditure (REE) = Net energy cost of the activity per se.
Recovery energy included in Total = exercise energy + recovery energy.
Utilization of 1 liter of O2 generates about 5 kcal of energy.

Do you subtract calories from BMR?

The Difference between RMR and BMR Some research would suggest that BMR is a little more accurate than RMR, as RMR has more uncontrollable factors. Both, however, still rely on an accurate lean body mass reading for their equations.

What is the Harris Benedict equation used to calculate?