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Population anthropometric data
| Age Group | Y7 | Y9 | Y11 |
| N | 41 | 38 | 28 |
| Age (yrs) | 7.0 ± 0.3 (Range 6.5–7.5) | 9.0 ± 0.3 (Range 8.0–9.8) | 11.0 ± 0.3 (Range 10.5–12.0) |
| Height (m) | 1.22 ± 0.06 | 1.34 ± 0.07 | 1.46 ± 0.06 |
| Weight (kg) | 25.3 ± 4.7 | 32.5 ± 7.1 | 43.1 ± 8.7 |
| BMI (kg/m2) | 17.0 ± 2.1 | 18.0 ± 2.8 | 20.0 ± 3.1 |
