Table 2.
Participant characteristics by pubertal group; mean (SD).
| Early puberty (n = 103) | Middle puberty (n = 387) | Late puberty (n = 519) | Group comparisons (P < 0.05) | |
|---|---|---|---|---|
| Age (years) | 11.6 (0.77) | 11.8 (0.77) | 12.7 (0.92) | L > E, M |
| Height (cm) | 148.6 (7.4) | 152.2 (7.4) | 158.5 (6.9) | L > E, M M > E |
| Weight (kg) | 47.1 (12.3) | 52.1 (15.7) | 64.5 (18.2) | L > E, M M > E |
| BMI z-score | 0.66 (1.14) | 0.82 (1.09) | 1.31 (0.88) | L > E, M |
| Vigorous PA (minh−1) | 0.96 (0.59) | 0.80 (0.58) | 0.62 (0.49) | L < E, M M < E |
| VO2max (ml.kg · min−1) | 39.7 (4.0) | 38.8 (4.9) | 36.0 (5.3) | L < E, M |
| Accelerometer counts per minute | 449.6 (142.3) | 420.4 (123.9) | 366.7 (279.5) | L < E, M |
| Accelerometer wear time (minday−1) | 824.4 (92.7) | 827.1 (83.3) | 837.9 (91.1) | NS |
| Time spent sedentary (minh−1) | 37.8 (4.1) | 38.2 (4.0) | 40.6 (4.23) | L > E, M |
| Light PA (minh−1) | 18.9 (3.1) | 18.7 (3.3) | 16.9 (3.5) | L < E, M |
| Moderate PA (minh−1) | 2.4 (0.9) | 2.3 (0.8) | 1.9 (0.8) | L < E, M |
E = Early Puberty, M = Middle Puberty, L = Late Puberty, NS = Non-Significant