Weight2Weight

Calculations

The calculations use the following for Calories/day/lb of body weight:

American Heart Association

Activity level
 Calories/day/pound
Definitions
Male
Female
v.Sedate
13
11.7
 Little or no exercise and a desk job.
Sedate
14
12.6
 Light exercise or sports 1-3 days a week
m.Active
15
13.5
 Moderate exercise or sports 3-5 days a week.
Active
16
14.4
 Hard exercise or sports 6-7 days a week.
v.Active
17
15.3
 Hard daily exercize or sports with a job demanding significant physical effort.

Table 1. Calories/day/lb

These values were originally from an American Heart Association brochure published 10-15 years ago. No distinction was provided for age.

Harris-Benedict Equations (1)

Male: Calories/day = Factor x [66.47 + 13.75 x weight (kg) + 5 x height (cm) - 6.76 x age (yrs)]

Female: Calories/day = Factor x [655.1 + 9.56 x weight (kg) + 1.85 x height (cm) - 4.68 x age (yrs)]

Mifflin-St Jeor Equations (2)

Male: Calories/day = Factor x 5 + 10 x weight (kg) + 6.25 x height (cm) - 5 x age (yrs)]

Female: Calories/day = Factor x [ -161 + 10 x weight (kg) + 6.25 x height (cm) - 5 x age (yrs)]

McArdle Activity Factors (3)

Activity Level
Factor
Definitions
Sedentary
1.2
 Little or no exercise and desk job
Light
1.375
 Light exercise or sports 1-3 days a week
Moderate
1.55
 Moderate exercise or sports 3-5 days a week
Very active
1.725
 Hard exercise or sports 6-7 days a week
Extremely active
1.90
 Hard daily exercise or sports and physical job

Table 2. Activity level factors

A custom Calories/day/pound can be used in Weight2Weight if the above values do not fit an individual need.

(1) Harris, J. Arthur and Francis Benedict. 1919. A Biometric Study of Basal Metabolism in
Man. Washington, D.C.: The Carnegie Institution

(2) Mifflin MD, St Jeor ST, Hill LA, Scott BJ, Daugherty SA, Koh YO. A new predictive equation for resting energy expenditure in healthy individuals.", Am J Clin Nutr., 1990 Feb;51(2):241-7. PMID: 2305711

(3) McArdle, William, Frank Katch, and Victor Katch. 1996. Exercise Physiology. 4th
Edition. Baltimore: Williams and Watkins.

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