Table 1 Demographic and Anthropometric Characteristics*
| Â | Subjects from Study 1 | Subjects from Study 2 | ||
|---|---|---|---|---|
| Â | 6 to 18 years | 7 to 11 years | ||
| Â | Male (n = 83) | Female (n = 59) | Male (n = 20) | Female (n = 13) |
Age (yr) | 12.0 ± 3.7 | 11.6 ± 3.6 | 8.8 ± 1.3 | 8.2 ± 1.0 |
Height (cm) | 154.1 ± 19.9 | 149.1 ± 14.0 | 136.2 ± 8.7 | 129.1 ± 8.4†|
Weight (kg) | 51.5 ± 21.2 | 47.7 ± 17.6 | 34.5 ± 10.0 | 30.1 ± 10.4 |
FM DXA + FFM DXA | 51.1 ± 21.4 | 46.9 ± 17.6 | 33.7 ± 9.9 | 29.3 ± 10.4 |
BMI Percentile | 67.5 ± 26.7 | 66.4 ± 28.8 | 64.7 ± 32.0 | 65.7 ± 22.2 |
Race/Ethnicity: n (%) | Â | Â | Â | Â |
   White | 12 (14) | 8 (13) | 4 (20) | 1 (8) |
   Black | 31 (37) | 27 (46) | 5 (25) | 5 (38) |
   Hispanic | 28 (34) | 20 (34) | 7 (35) | 1 (8) |
   Asian | 3 (4) | 1 (2) | 4 (20) | 6 (46) |
   Other | 9 (11) | 3 (5) | 0 | 0 |
FM DXA (kg) | 11.8 ± 9.3 | 15.3 ± 10.1†| 8.8 ± 6.3 | 8.5 ± 5.8 |
AT MRI (kg) | 12.4 ± 8.2 | 15.3 ± 9.3 | 10.0 ± 5.8 | 9.0 ± 5.6 |
BMC DXA (kg) | 2.0 ± 0.9 | 1.8 ± 0.6 | 1.2 ± 0.3 | 1.0 ± 0.3†|
FFM DXA (kg) | 39.3 ± 15.3 | 31.7 ± 8.9†| 24.9 ± 4.5 | 20.8 ± 4.9†|
nbLBM DXA (kg) | 37.3 ± 14.4 | 29.9 ± 8.3†| 23.7 ± 4.3 | 19.8 ± 4.7†|
SMM DXA (kg) | 18.3 ± 8.4 | 14.3 ± 4.8†| 10.4 ± 2.7 | 8.6 ± 2.4 |
SMM MRI (kg) | 18.3 ± 8.9 | 14.4 ± 5.1†| 9.9 ± 2.7 | 8.3 ± 2.8 |