Table 2.
Lung function parameters in runners at pre-, post- and 1 h post-exercise at both times of the day: 9 am and 4 pm
| Pre-trial | Post-trial | 1 h post-trial | ||||
|---|---|---|---|---|---|---|
| 9 am | 4 pm | 9 am | 4 pm | 9 am | 4 pm | |
| FVC | 5.63 ± 0.91 | 5.59 ± 0.82 | 5.47 ± 0.88 | 5.31 ± 1.04 | 5.32 ± 0.88 | 5.77 ± 0.87 |
| FEV1 | 4.53 ± 0.90 | 4.46 ± 0.77 | 4.56 ± 0.89 | 4.39 ± 1.02 | 4.60 ± 1.02 | 4.70 ± 0.84 |
| FEV1R | 0.81 ± 0.11 | 0.80 ± 0.09 | 0.83 ± 0.13 | 0.83 ± 0.10 | 0.81 ± 0.10 | 0.81 ± 0.08 |
| PEF | 642 ± 166 | 647 ± 120 | 604 ± 139 | 640 ± 130 | 467 ± 262 | 649 ± 149 |
| FEF25–75 | 4.10 ± 1.84 | 4.17 ± 1.32 | 4.18 ± 1.75 | 4.48 ± 1.68 | 4.49 ± 1.89 | 4.54 ± 1.39 |
Forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), forced expiratory volume in 1 s ratio (FEV1R), forced expiratory flow (FEF) and forced expiratory flow 25–75% (FEF25–75) show no diurnal variation during the trials