Physical characteristics of female swimmers and control girls
| Variable | Swimming | Control |
|---|---|---|
| Values are mean (SD) with range, or n. | ||
| *Significant difference between swimmers and controls (p<0.05). | ||
| n | 61 | 71 |
| Age (years)* | 15.9 (4.9) | 15.0 (4.0) |
| (8.6 to 26.5) | (8.5 to 24.4) | |
| Mass (kg) | 49.68 (12.27) | 50.71 (12.44) |
| (26.60 to 69.45) | (23.10 to 76.10) | |
| Height (cm)* | 159.1 (12.1) | 155.2 (11.9) |
| (129.5 to 182.0) | (125.0 to 176.0) | |
| BMI (kg/m2) | 19.3 (2.8) | 20.7 (3.1) |
| (13.7 to 25.8) | (14.8 to 27.1) | |
| BMI (centile)* | 40.7 (2.8) | 57.4 (25.1) |
| (4.7 to 85.8) | (4.8 to 98.7) | |
| Body fat (%)* | 18.3 (4.2) | 22.3 (5.4) |
| (12.0 to 31.3) | (13.3 to 49.6) | |
| Fat-free mass (kg)* | 40.3 (9.0) | 34.5 (7.8) |
| (22.7 to 56.5) | (18.4 to 52.5) | |
| Years since menarche | 5.2 (4.0) | 4.5 (2.9) |
| Tanner stage 1, n | 17 | 12 |
| Tanner stage 2, n | 4 | 13 |
| Tanner stage 3, n | 14 | 10 |
| Tanner stage 4, n | 10 | 17 |
| Tanner stage 5, n | 16 | 19 |