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Introduction
Height/Weight
Knee Height
Frame Size
Weight for Height
Circumference
Circumference Tables
Body Fat
Lean Body Mass
Abdominal Fatfolds
Anthro Tables
Summary
Resources
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Figure 16. Calculation of Body
Density (Durnin and Womersley 14)
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D = 1.1631 – [0.0632 x log10(sumFF)] |
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D = body density in kg/m3; sumFF
= sum of fatfolds for biceps, triceps, subscapular, and suprailiac in
millimeters |
Figure 17. Two Calculations of Body
Fat Percentage Using Body Density
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Siri15 equation: % fat = [(4.95 x D) – 4.5]
x 100% |
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Brozek16 equation: % fat = [(4.57/D) –
4.142] x 100% |
Figure 18. Calculation of Mid-Upper
Arm Fat Area17
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MUFA = [(TFF x MAC)/2] – [(Pi x TFF2)/4] |
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MUFA = mid-upper arm fat area; TFF = triceps fatfold in
millimeters; MAC = mid-arm circumference in millimeters; Pi = 3.14 |
Table 8. Evaluation of Mid-Upper Arm
Fat Area18
|
Sex |
Age |
5th* |
25th* |
50th* |
75th* |
95th* |
|
Male |
18 |
560 |
860 |
1264 |
1947 |
3928 |
|
19-24 |
594 |
963 |
1406 |
2231 |
3652 |
|
25-34 |
675 |
1174 |
1752 |
2459 |
3786 |
|
35-44 |
703 |
1310 |
1792 |
2463 |
3624 |
|
45-54 |
749 |
1254 |
1741 |
2359 |
3928 |
|
55-64 |
658 |
1166 |
1645 |
2236 |
3466 |
|
65-75 |
573 |
1122 |
1621 |
2199 |
3327 |
|
Female |
18 |
1003 |
1616 |
2104 |
2617 |
3733 |
|
19-24 |
1046 |
1596 |
2166 |
2959 |
4896 |
|
25-34 |
1173 |
1841 |
2548 |
3512 |
5560 |
|
35-44 |
1336 |
2158 |
2898 |
3932 |
5847 |
|
45-54 |
1459 |
2447 |
3244 |
4229 |
6140 |
|
55-64 |
1345 |
2520 |
3369 |
4360 |
6152 |
|
65-75 |
1363 |
2266 |
3063 |
3942 |
5530 |
*percentile of population for white persons from NHANES 1971-1974.
Adapted from Frisancho.
Table 9. Estimation of Body Fat
Percentage by Sum of Four Fatfolds*
|
|
MALES |
FEMALES |
|
SumFF |
17-29 |
30-39 |
40-49 |
>50 |
16-29 |
30-39 |
40-49 |
>50 |
|
20 |
8.1 |
12.2 |
12.2 |
12.6 |
14.1 |
17.0 |
19.8 |
21.4 |
|
30 |
12.9 |
16.2 |
17.7 |
18.6 |
19.5 |
21.8 |
24.5 |
26.6 |
|
40 |
16.4 |
19.2 |
21.4 |
22.9 |
23.4 |
25.5 |
28.2 |
30.3 |
|
50 |
19.0 |
21.5 |
24.6 |
26.5 |
26.5 |
28.2 |
31.0 |
33.4 |
|
60 |
21.2 |
23.5 |
27.1 |
29.2 |
29.1 |
30.6 |
33.2 |
35.7 |
|
70 |
23.1 |
25.1 |
29.3 |
31.6 |
31.2 |
32.5 |
35.0 |
37.7 |
|
80 |
24.8 |
26.6 |
31.2 |
33.8 |
33.1 |
34.3 |
36.7 |
39.6 |
|
90 |
26.2 |
27.8 |
33.0 |
35.8 |
34.8 |
35.8 |
38.3 |
41.2 |
|
100 |
27.6 |
29.0 |
34.4 |
37.4 |
36.4 |
37.2 |
39.7 |
42.6 |
|
110 |
28.8 |
30.1 |
35.8 |
39.0 |
37.8 |
38.6 |
41.0 |
43.9 |
|
120 |
30.0 |
31.1 |
37.0 |
40.4 |
39.0 |
39.6 |
42.0 |
45.1 |
|
130 |
31.0 |
31.9 |
38.2 |
41.8 |
40.2 |
40.6 |
43.0 |
46.2 |
|
140 |
32.0 |
32.7 |
39.2 |
43.0 |
32.0 |
32.7 |
39.7 |
43.6 |
|
150 |
32.9 |
33.5 |
40.2 |
44.1 |
32.9 |
33.5 |
40.2 |
44.1 |
|
160 |
33.7 |
34.3 |
41.2 |
45.1 |
33.7 |
34.3 |
41.2 |
45.1 |
|
170 |
34.5 |
34.8 |
42.0 |
46.1 |
34.5 |
34.8 |
42.0 |
46.1 |
* adapted from Grant A, DeHoog S.
Nutritional Assessment and Support. 4th Edition. 1991 Grant & DeHoog:
Seattle, WA.
Anthropometric measures of body fatness may accurately reflect small changes
in stores, but rapid loss of body fat suggests an extreme calorie deficit.
However, finer estimates of body fat content may be confounded by malnutrition,
disease, and whether or not the client is extremely lean or obese19.
In these cases, the fatfold sites may not be proportional to body fat content or
reflect the pool of subcutaneous fat. In disease, fat pools may shift from
subcutaneous to visceral deposits. In lean clients, there may be fewer
subcutaneous stores and adequate visceral stores while in the obese subcutaneous
stores may be much higher. In addition, race, sex, and age can alter the
"normal" estimates of body fat.
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