Table 1.
Physical characteristics and sports training background of the runners (n=9).
| Variables | Mean (±SD) |
|---|---|
| Age (year) | 23.2 (6.4) |
| Height (m) | 1.70 (.03) |
| Weight (kg) | 58.9 (4.6) |
| FVC (l) | 4.2 (.4) |
| FEV1 (l) | 3.8 (.3) |
| FEV1 / FVC (%) | 90.9 (6.3) |
| 12-s MVV (l·min-1) | 184.6 (24.4) |
| VO2 max (ml·kg-1·min-1) | 65.0 (4.7) |
| VE max (l·min-1) | 145.2 (9.6) |
| HR max (beat·min-1) | 187.4 (9.7) |
| Experience of endurance running (years) | 6.9 (2.8) |
| Training frequency (sessions·week-1) | 4.4 (1.7) |
| Training duration (hrs·session-1) | 2.3 (.7) |
| Training distance (km·week-1) | 57.8 (17.2) |
FVC, forced vital capacity; FEV1, forced expiratory volume in 1 s; 12-s
MVV, maximum voluntary ventilation measured in 12 s; VO2max, VEmax and HRmax, maximum oxygen uptake, minute ventilation and heart rate, respectively, recorded in maximum graded treadmill test.