Table 2.
Body composition at term equivalent age
| Total, N = 65 | Male, N = 35 | Female, N = 30 | p valuea | |
|---|---|---|---|---|
| Sum of skinfolds (mm)b, mean ± SD | 22.4 ± 4.2 | 22.4 ± 4.4 | 22.5 ± 4.1 | 0.872 |
| Waist circumference (mm)c, median (IQR) | 36.0 (34.0–37.5) | 36.5 (34.5–37.8) | 35.4 (33.3–37.0) | 0.167 |
| ADP fat mass (g)d, mean ± SD | 864 ± 253 | 910 ± 280 | 799 ± 198 | 0.100 |
| DXA fat mass (g)e, mean ± SD | 1078 ± 417 | 1187 ± 475 | 1012 ± 376 | 0.258 |
| ADP fat mass percentage, median (IQR) | 20.7 (18.4–23.0) | 21.2 (18.4–23.4) | 20.4 (18.1–22.6) | 0.594 |
| DXA fat mass percentage, median (IQR) | 25.0 (21.5–30.5) | 25.1 (22.4–31.8) | 24.8 (19.8–29.5) | 0.684 |
| ADP fat-free mass (g), mean ± SD | 3309 ± 462 | 3447 ± 430 | 3114 ± 442 | 0.006 |
| DXA fat-free mass (g), mean ± SD | 3138 ± 400 | 3316 ± 422 | 3032 ± 356 | 0.051 |
| ADP fat-free mass percentage, median (IQR) | 79.3 (77.1–81.6) | 78.8 (76.6–81.7) | 79.7 (70.5–81.9) | 0.594 |
| DXA fat-free mass percentage, median (IQR) | 75.1 (69.6–78.5) | 74.9 (68.2–77.7) | 75.2 (70.5–80.2) | 0.686 |
ap value for females compared with males based on t test for normal distributions, Mann-Whitney U test for non-parametric variables, and Pearson chi-square or Fisher’s exact test for categorical variables
bSum of skinfolds measured at biceps, triceps, subscapular, and supra-iliac positions, n = 63 (34 males, 39 females)
cWaist circumference, n = 63 (34 males, 39 females)
dADP, n = 58 (34 males, 24 females)
eDXA, n = 32 (12 males, 24 females)
ADP air displacement plethysmography, DXA dual-energy X-ray, IQR interquartile range, SD standard deviation