Name ____________________
Regents Biology
Mrs. Ross
Caloric Consumption
Purpose: To gain insight into caloric intake and use.
Procedure: Use the following formulas to calculate your caloric needs for a 24 hour
period.
A. Harris Benedict Formula
Men= 66 + (13.7 x weight in kilograms) + (5 x height in cm) – (6 x age)
Female= 655 + (9.6 x weight in kilograms) + (1.8 x height in cm) – (4.7 x age)
1. Calculate your weight in kilograms by dividing your weight in pounds by 2.2.
2. Multiply your answer from number 1 by 13.7 if you are male or by 9.6 if you are
female.
3. Calculate your height in centimeters by multiplying your height in inches by
2.54.
4. Multiply your answer from number 3 by 5 if you are male or by 1.8 if you are
female.
5. If you are a male multiple by your age by 6. If you are a female multiply your age
by 4.7.
6. To determine your basal metabolic rate:
Male: Add your answers from numbers 2 and 4 + 66 – your answer to number 5.
Female: Add your answers from numbers 2 and 4 + 655 – your answer to number
5.
Basal Metabolic Rate according to Harris-Benedict = ____________________
Daily Caloric Requirements According to Harris-Benedict Formula
Activity Multiplier
Sedentary = BMR X 1.2 (little or no exercise, desk job)
Lightly active = BMR X 1.375 (light exercise/sports 1-3 days/wk)
Moderately active = BMR X 1.55 (moderate exercise/sports 3-5 days/wk)
Very active = BMR X 1.725 (hard exercise/sports 6-7 days/wk)
Extremely active = BMR X 1.9 (hard daily exercise/sports & physical job or 2X day
training, i.e marathon, contest etc.)
Total Calories required per day based on Harris Benedict Formula = _________
B. Katch-McArdle Formula
Basal Metabolic Rate = 370 + (21.6 x lean body mass in kilograms)
1. Multiply your weight in pounds by your body fat percentage determined in
the body composition lab.
2. Subtract the answer to number 1 from your total body weight to determine
your lean body mass in pounds.
3. Divide your answer from number 2 by 2.2 to determine your lean body
mass in kilograms.
4. Multiply your answer from number 3 by 21.6.
5. Add 370 to your answer from number 4 to determine your basal metabolic
rate.
Basal Metabolic Rate according to Katch McArdle = ____________________
Daily Caloric Requirements According to Katch McArdle Formula
Activity Multiplier
Sedentary = BMR X 1.2 (little or no exercise, desk job)
Lightly active = BMR X 1.375 (light exercise/sports 1-3 days/wk)
Moderately active = BMR X 1.55 (moderate exercise/sports 3-5 days/wk)
Very active = BMR X 1.725 (hard exercise/sports 6-7 days/wk)
Extremely active = BMR X 1.9 (hard daily exercise/sports & physical job or 2X day
training, i.e marathon, contest etc.)
Total Calories required per day based on Katch-McArdle Formula = _________
C. Total Caloric Demand Based on Activity
Activity
Number of
Calories per
Weight in
Calories
hours activity
hour for each
pounds
needed for
is performed
pound of body
weight
Sleeping or
0.5
reclining
Sitting
0.7
Doing light
0.8
work while
sitting (ex.
School work)
Standing
0.9
activity
Walking
1.5
Moderate
1.8
exercise (ex.
Gym class,
bowling)
2.5
Severe exercise
Total
24
X
X