Schofield equation
The Schofield Equation is a method of estimating the basal metabolic rate (BMR) of adult men and women published in 1985.[1]
This is the equation used by the WHO in their technical report series.[2] The equation that is recommended to estimate BMR by the US Academy of Nutrition and Dietetics is the Mifflin-St. Jeor equation.[3]
The equations for estimating
Men:
Age | Equation (kJ/day) | SEE |
---|---|---|
< 3 | 249 × W - 127 | 292 |
3–10 | 95 × W + 2110 | 280 |
10–18 | 74 × W + 2754 | 441 |
18–30 | 63 × W + 2896 | 641 |
30–60 | 48 × W + 3653 | 700 |
> 60 | 49 × W + 2459 | 686 |
Women:
Age | Equation (kJ/day) | SEE |
---|---|---|
< 3 | 244 × W - 130 | 246 |
3–10 | 85 × W + 2033 | 292 |
10–18 | 56 × W + 2898 | 466 |
18–30 | 62 × W + 2036 | 497 |
30–60 | 34 × W + 3538 | 465 |
> 60 | 38 × W + 2755 | 451 |
The equations for estimating BMR in kcal/day (kilocalories per day) from body mass (kg) are:
Men:
Age | Equation (kcal/day) | SEE |
---|---|---|
< 3 | 59.512 × W - 30.4 | 70 |
3–10 | 22.706 × W + 504.3 | 67 |
10–18 | 17.686 × W + 658.2 | 105 |
18–30 | 15.057 × W + 692.2 | 153 |
30–60 | 11.472 × W + 873.1 | 167 |
> 60 | 11.711 × W + 587.7 | 164 |
Women:
Age | Equation (kcal/day) | SEE |
---|---|---|
< 3 | 58.317 × W - 31.1 | 59 |
3–10 | 20.315 × W + 485.9 | 70 |
10–18 | 13.384 × W + 692.6 | 111 |
18–30 | 14.818 × W + 486.6 | 119 |
30–60 | 8.126 × W + 845.6 | 111 |
> 60 | 9.082 × W + 658.5 | 108 |
Key:
W = Body weight in kilograms
SEE =
The raw figure obtained by the equation should be adjusted up or downwards, within the
Subjects leaner and more muscular than usual require more energy than the average.
Effects of age and body mass may cancel out: an obese 30-year-old or an athletic 60-year-old may need no adjustment from the raw figure.
Physical activity levels
To find
Activity | Male | Female | Description |
---|---|---|---|
Sedentary | 1.3 | 1.3 | Very physically inactive, inactive in both work and leisure. |
Lightly active | 1.6 | 1.5 | Daily routine includes some walking, or intense exercise once or twice per week. Most students are in this category. |
Moderate activity | 1.7 | 1.6 | Intense exercise lasting 20–45 minutes at least three time per week, or a job with a lot of walking, or a moderate intensity job. |
Very active | 2.1 | 1.9 | Intense exercise lasting at least an hour per day, or a heavy physical job, such as a mail carrier or an athlete in training. |
Extremely active | 2.4 | 2.2 | Extremely active means an athlete on an unstoppable training schedule or a very demanding job, such as working in the armed forces or shoveling coal.
|
The FAO/WHO uses different PALs in their recommendations when recommending how to calculate TEE. See Table 5.3 of their working document. Energy Requirements of Adults, Report of a Joint FAO/WHO/UNU Expert Consultation.[5]
These equations were published in 1989 in the
See also
References
- PMID 4044297.
- ^ World Health Organisation, Fao, and Unu. Energy and protein requirements. Geneva: WHO, Technical Report Series 724, 1985.
- ^ J Am Diet Assoc. 2009;109:330-346.
- ^ Energy Requirements of Adults, Report of a Joint FAO/WHO/UNU Expert Consultation, (See table 5.2).
- ^ "Human energy requirements". www.fao.org. Retrieved 2023-12-25.