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Demographic and anthropometric characteristics of Study 2 participants
| Girls | Boys | |
|---|---|---|
| N | 101 | 103 |
| Age (years) | 13.1 ± 2.6 | 12.9 ± 2.9 |
| Race (% non-Hispanic White) | 56.4 | 64.1 |
| Height (cm) | 155.3 ± 12.6 | 157.8 ± 17.3 |
| Fat mass (%)*** | 31.1 ± 12.0 | 23.7 ± 12.9 |
| Fat-free mass (log kg) | 41.7 ± 13.5 | 44.4 ± 16.7 |
| BMI z | 1.0 ± 1.1 | .9 ± 1.1 |
| Overweight (%) | 49.5 | 45.6 |
p < .001.
