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| Boys (n = 506) | Girls (n = 531) | |
| Mean age (yrs ± SD) | 11.7±0.8 | 11.6±0.8 |
| Mean BMI (kg/m2 ± SD) | 19.1±3.5 | 18.8±3.3 |
| Overweight | 26% | 20% |
| Obese | 5% | 4% |
| Mean counts per minute (± SD) | 536±146 | 449±130 |
| ethnicity (% native) | 86% | 85% |
