The area of a cross-section of the upper arm at its midpoint occupied by fat is approximated by subtracting the area occupied by muscle from the total cross-sectional area.
Parameters:
(1) mid arm circumference in cm
(2) triceps skin fold (TSF) in mm
(3) gender of the patient
(4) age of the patient in years
mid-arm fat area in mm^2 =
= (mid arm area in mm^2) - (mid arm muscle area in mm^2) =
= (((10 * (mid-arm circumference in cms))^2) / (4 * (π))) - ((((10 * (mid-arm circumference in cms)) - ((π) * (TSF in mm)) ^ 2) / ( 4 * (π)) =
= (5 * (mid-arm circumference in cms) * (TSF in mm)) - (((π)^2) * ((TSF)^2) / (4 * (π)))
Percentiles of Upper Arm Fat Areas in square millimeters in Normal Whites (Frischanco)
|
Men |
Women |
||||
---|---|---|---|---|---|---|
Age |
5th% |
50th% |
95th% |
5th% |
50th% |
95th% |
1-1.9 |
452 |
741 |
1176 |
401 |
706 |
1140 |
2-2.9 |
434 |
737 |
1148 |
469 |
747 |
1173 |
3-3.9 |
464 |
736 |
1151 |
473 |
822 |
1158 |
4-4.9 |
428 |
722 |
1085 |
490 |
766 |
1236 |
5-5.9 |
446 |
713 |
1299 |
470 |
812 |
1536 |
6-6.9 |
371 |
678 |
1519 |
464 |
827 |
1436 |
7-7.9 |
423 |
758 |
1511 |
491 |
920 |
1644 |
8-8.9 |
410 |
725 |
1558 |
527 |
1042 |
2482 |
9-9.9 |
485 |
859 |
2081 |
642 |
1219 |
2524 |
10-10.9 |
523 |
982 |
2609 |
616 |
1141 |
3005 |
11-11.9 |
536 |
1148 |
2574 |
707 |
1301 |
3690 |
12-12.9 |
554 |
1172 |
3580 |
782 |
1511 |
3369 |
13-13.9 |
475 |
1096 |
3322 |
726 |
1625 |
4150 |
14-14.9 |
453 |
1082 |
3508 |
981 |
1818 |
3765 |
15-15.9 |
521 |
937 |
3100 |
839 |
1886 |
4195 |
16-16.9 |
542 |
1078 |
3041 |
1126 |
2006 |
4236 |
17-17.9 |
598 |
1096 |
2888 |
1042 |
2104 |
5159 |
18-18.9 |
560 |
1264 |
3928 |
1003 |
2104 |
3733 |
19-24.9 |
594 |
1406 |
3652 |
1046 |
2166 |
4896 |
25-34.9 |
675 |
1752 |
3786 |
1173 |
2548 |
5560 |
35-44.9 |
703 |
1792 |
3624 |
1336 |
2898 |
5847 |
45-54.9 |
749 |
1741 |
3928 |
1459 |
3244 |
6140 |
55-64.9 |
658 |
1645 |
3466 |
1345 |
3369 |
6152 |
65-74.9 |
573 |
1621 |
3327 |
1363 |
3063 |
5530 |
ICD-10: ,