Anthropometrical measures | 7 year old n = 71 | 8 year old n = 82 | 9 year old n = 93 | 10 year old n = 100 | 11 year old n = 101 | 12 year old n = 82 | 13 year old n = 73 |
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Chronological age (years) | 7.04 ± 0.29 6.51–7.49 | 8.06 ± 0.26 7.54–8.49 | 9.02 ± 0.30 8.52–9.47 | 9.97 ± 0.28 9.50-10.49 | 11.08 ± 0.27 10.53–11.49 | 11.92 ± 0.30 11.50-12.49 | 13.00 ± 0.29 12.51–13.49 |
Body mass (kg) | 22.89 ± 2.52 22.29–23.48 | 24.71 ± 2.68 24.13– 25.30 | 27.02 ± 4.79 26.04–28.01 | 29.43 ± 5.20 28.32–30.46 | 32.88 ± 4.92 31.90-33.85 | 35.28 ± 6.41 33.87–36.69 | 39.70 ± 6.95 38.08–41.33 |
Body stature (cm) | 119.32 ± 4.30 118.30–120.33 | 124.29 ± 4.69 123.26-125.32 | 128.97 ± 5.99 127.73–130.20 | 132.91 ± 5.74 131.78-134.05 | 138.31 ± 5.81 137.16-139.46 | 141.99 ± 7.22 140.40-143.58 | 149.29 ± 7.67 147.50-151.08 |
BMI (kg/m²) | 16.05 ± 1.28 15.75–16.35 | 15.98 ± 1.30 15.69–16.26 | 16.19 ± 2.10 15.76–16.62 | 16.58 ± 2.01 16.18–16.98 | 17.13 ± 1.84 16.76–17.50 | 17.39 ± 2.19 16.91–17.87 | 17.73 ± 2.03 17.20-18.27 |
Triceps skinfold (mm) | 6.79 ± 2.28 6.24–7. 32 | 6.82 ± 1.72 6.44–7.20 | 6.62 ± 3.02 6.00-7.25 | 7.24 ± 2.83 6.67–7.79 | 7.91 ± 3.56 7.21–8.62 | 8.35 ± 4.00 7.47–9.23 | 8.18 ± 4.07 7.24–9.13 |
Calf skinfold (mm) | 6.90 ± 2.48 6.31–7.48 | 7.30 ± 2.24 6.82–7.80 | 7.21 ± 4.11 6.37–8.06 | 8.11 ± 3.98 7.32–8.90 | 8.99 ± 4.62 8.07–9.90 | 9.84 ± 5.45 8.64–11.04 | 9.58 ± 4.63 8.50-10.66 |
Sum of skinfolds (mm) | 13.68 ± 4.29 12.76–14.70 | 14.12 ± 3.47 13.36–14.89 | 13.84 ± 6.84 12.43–15.25 | 15.35 ± 6.35 14.08–16.61 | 16.90 ± 7.69 15.38–18.42 | 18.20 ± 8.80 16.26–20.13 | 17.76 ± 8.13 15.87–19.66 |
Fat (%) | 9.34 ± 2.62 8.72–9.97 | 9.61 ± 2.19 9.15–10.08 | 9.44 ± 4.17 8.58–10.30 | 10.36 ± 3.88 9.59–11.13 | 11.31 ± 4.70 10.38–12.24 | 12.10 ± 5.37 10.92–13.23 | 11.84 ± 4.96 10.68-13.00 |
Predicted age at PHV (years) | 12.40 ± 0.25 12.33–12.45 | 12.91 ± 0.22 12.87–12.96 | 13.35 ± 0.32 13.28–13.42 | 13.78 ± 0.33 13.71–13.84 | 14.25 ± 0.34 14.19–14.32 | 14.62 ± 0.42 14.53–14.71 | 14.92 ± 0.47 14.81–15.03 |
Estimated maturity timing (years) | 5.35 ± 0.23 5.29–5.40 | 4.85 ± 0.25 4.80–4.91 | 4.32 ± 0.30 4.27–4.39 | 3.80 ± 0.36 3.72–3.87 | 3.16 ± 0.377 3.09–3.24 | 2.70 ± 0.44 2.60–2.79 | 1.92 ± 0.511 1.80–2.04 |