Table 3.
Assessment of Body Composition by Different Methods in the Whole Cohort; and Developmental and Validation Set.
| Assessment of body composition | Body compartments | Total mean ± SD (min–max) |
Development set (n = 200) Mean ± SD (min–max) |
Validation set (n = 102) Mean ± SD (min–max) |
|---|---|---|---|---|
| DEXA | Fat Mass (kg) | (n = 302) 13.16 ± 6.16 (3.29–33.64) |
(n = 200) 13.40 ± 6.12 (3.29–33.64) |
(n = 102) 12.69 ± 6.24 (3.58–28.85) |
| Fat-free mass (kg) | 47.85 ± 9.36 (28.82–71.70) | 48.14 ± 9.40 (28.82–71.70) | 47.28 ± 9.30 (30.16–69.43) | |
| BIA | Fat mass (kg) | (n = 297) 12.08 ± 8.23 (0.44–55.3) |
(n = 196) 12.50 ± 8.66 (0.44–55.3) |
(n = 101) 11.65 ± 7.66 (0.5–37.6) |
| Fat-free mass (kg) | 49.61 ± 9.57 (2.2–73.7) | 49.51 ± 10.00 (2.2–73.7) | 49.73 ± 8.80 (33.5–69.9) | |
| TSFT (triceps fat mass) | Fat mass (cm) | (n = 297) 1.45 ± 0.77 (0.28–7) |
(n = 196) 1.48 ± 0.69 (0.32–3.5) |
(n = 101) 1.41 ± 0.90 (0.28–7) |
| MAMC (mid-upper arm fat-free mass) | Fat-free mass (cm) | (n = 297) 22.29 ± 3.16 (6.16–34.65) |
(n = 196) 22.52 ± 3.22 (6.16–34.65) |
(n = 101) 21.84 ± 3.00 (7.02–28.35) |
Abbreviation: BIA: bioelectrical impedance analysis; DEXA: dual-energy X-ray absorptiometry; MAMC: mid-arm muscle circumference; TSFT: triceps skinfold thickness.