Table 1.
Demographic characteristics of swimmers.
| Characteristics | Total (n = 24) | Girls (n = 11) | Boys (n = 13) | P value |
|---|---|---|---|---|
| Age (years)∗ | 17.00 (16.00–20.50) | 17.00 (14.00–19.00) | 17.00 (16.00–21.00) | .13 |
| Years of competition∗ | 10.00 (7.00–11.50) | 9.00 (7.00–10.00) | 10.00 (7.00–12.00) | .33 |
| Training hours per week | 18.00 (16.00–20.00) | 18.00 (17.00–19.00) | 18.00 (14.00–20.00) | .87 |
| Asthma, n (%) | 5 (21) | 2 (18) | 3 (23) | .77 |
| Atopy, n (%) | 1 (4) | 1 (9) | 0 | – |
| FVC (%) ∗ | 114.50 (107.00–122.00) | 115.00 (107.00–122.00) | 114.00 (110.00–124.00) | .65 |
| FEV1 (%)∗ | 115.50 (105.00–124.00) | 111.00 (105.00–117.00) | 119.00 (104.00–126.00) | .27 |
| FEV1/FVC (%) ∗ | 85.20 (81.70–93.10) | 84.30 (82.50–93.70) | 86.15 (80.70–93.05) | .65 |
| FEF25–75 (%) ∗ | 112.00 (81.00–128.00) | 98.00 (83.50–114.00) | 117.00 (80.00–128.00) | .37 |
| FEV1 increase after BD (%) | 4.50 (1.00–7.00) | 5.00 (1.00–7.00) | 3.00 (0.50–6.00) | .41 |
BD: bronchodilation; FEV1: forced expiratory volume in the first second of expiration; FEF25–75: forced expiratory flow middle portion of FVC; FVC: forced vital capacity.
∗
Data are presented as median (25th–75th percentile).