Table 1.
Characteristics of the sample studied
| Variables | Males (n = 750) | Females (677) | Both sexes (n = 1427) | |||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | |
| Age (years) | 15.67 | 2.04 | 15.45 | 2.18 | 15.59 | 2.09 |
| Biological age (APHV) | 14.98 | 0.93 | 11.78 | 0.48* | ||
| Anthropometry | ||||||
| Weight (kg) | 64.81 | 14.86 | 58.67 | 12.52* | 62.66 | 14.38 |
| Standing height (cm) | 165.41 | 17.45 | 152.84 | 28.81* | 160.92 | 22.98 |
| Sitting height (cm) | 86.93 | 6.17 | 83.02 | 4.28* | 85.59 | 5.89 |
| BMI (kg/m2) | 23.18 | 4.30 | 23.41 | 4.31 | 23.26 | 4.30 |
| Body composition (DXA) | ||||||
| Percentage of Fat (% G) | 23.99 | 8.49 | 34.94 | 7.37* | 27.7 | 9.64 |
| Fat Mass (kg) | 15.34 | 8.18 | 20.23 | 8.19* | 17.01 | 8.50 |
| Lean Mass (kg) | 46.76 | 9.92 | 36.2 | 6.85* | 43.18 | 10.29 |
| BMD (g/cm2) | ||||||
| Body total | 1.051 | 0.160 | 0.941 | 0.110* | 1.010 | 0.152 |
| BMC (g) | ||||||
| Body total | 2.509 | 0.543 | 2.051 | 0.35* | 2.348 | 0.532 |
| Isometric strength (lbf) | ||||||
| Right Hand | 65.27 | 30.24 | 50.03 | 19.19* | 59.01 | 27.31 |
| Left Hand | 62.84 | 28.84 | 46.95 | 17.69* | 56.32 | 26.07 |
| Maximum peak expiratory flow (L/min) | 368.89 | 119.37 | 296.35 | 82.86* | 346.02 | 114.18 |
X Mean, SD Standard deviation, APHV Age at peak height velocity, BMI Body Mass Index, BMD Bone Mineral Density, BMC Bone Mineral Content, * = Significant difference (p < 0.001)