Mean (SD) thermal and spirometry data after 30 and 40 min of each experimental condition (n=9)
| 30 min | 40 min | |||||
| Variable | IMM35 | IMM40 | EXERC | IMM35 | IMM40 | EXERC |
| Tre (°C) | 37.2 (0.2) | 38.2 (0.2) | 38.0 (0.3) | 37.3 (0.2) | 37.4 (2.0) | 37.3 (1.7) |
| Tskin (°C) | 33.5 (2.3) | 36.5 (4.4) | 34.5 (1.7) | 30.0 (2.7) | 32.7 (1.7) | 33.9 (1.3) |
| HR (beats/min) | 60 (19) | 97 (24) | 130 (34) | 67 (18) | 79 (27) | 82 (26) |
| FVC (L) | 5.3 (0.8) | 5.3 (0.8) | 5.3 (0.9) | 5.3 (0.8) | 5.3 (0.8) | 5.3 (0.7) |
| FEV1 (L) | 4.4 (0.5) | 4.6 (0.6) | 4.5 (0.6) | 4.3 (0.6) | 4.4 (0.5) | 4.4 (0.5) |
| FEV1/FVC (%) | 82.8 (5.4) | 87.0 (6.0) | 85.1 (7.6) | 82.6 (3.9) | 83.8 (5.8) | 83.1 (6.1) |
| FEF25 (L/s) | 8.1 (1.0) | 8.5 (0.9) | 8.2 (1.4) | 7.8 (1.3) | 8.2 (0.8) | 8.0 (0.9) |
| FEF50 (L/s) | 4.9 (0.7) | 5.7 (0.6) | 5.3 (1.0) | 4.8 (0.8) | 4.9 (0.6) | 4.9 (0.7) |
| FEF75 (L/s) | 2.1 (0.4) | 2.5 (0.5) | 2.5 (0.70 | 2.1 (0.4) | 2.2 (0.5) | 2.2 (0.6) |
FVC, forced vital capacity; FEV1, forced expiratory volume in 1 s; FEF, forced expiratory flow; HR, heart rate; IMM35, 35°C water immersion; IMM40, 40°C water immersion; EXERC, exercise; Tre EXERC, rectal temperature at exercise; Tre, rectal temperature; Tskin, skin temperature.