Tidal volume and breathing frequency for women at different work levels for the step and ramp protocols
| Step (n = 10) | Ramp (n = 11) | |||
|---|---|---|---|---|
| Vt | BF | Vt | BF | |
| Values are mean (SD). | ||||
| Vt, Tidal volume (litres); BF, breathing frequency. | ||||
| Rest | 0.60 (0.20) | 17.29 (4.79) | 0.60 (0.22) | 17.45 (4.54) |
| Warm up | 1.37 (0.30) | 33.10 (6.80) | 1.40 (0.34) | 32.36 (7.15) |
| 9.0 km/h | 1.44 (0.32) | 36.14 (6.04) | 1.44 (0.38) | 35.55 (6.85) |
| 10.8 km/h | 1.58 (0.35) | 39.24 (6.11) | 1.56 (0.42) | 39.09 (7.15) |
| 12.6 km/h | 1.67 (0.37) | 45.70 (8.70) | 1.63 (0.44) | 45.91 (10.28) |
| 14.4 km/h | 1.71 (0.36) | 52.90 (7.84) | 1.67 (0.42) | 52.55 (8.69) |
| 16.2 km/h | 1.95 (0.34) | 59.00 (7.20) | ||