Table 4.
Respiratory, metabolic and perceptual responses during exercise in the CR_F trial at exhaustion, in the CR trial at the iso-time point, and in the CR trial at exhaustion (n=9). Data are means (±SD).
| CR_F Trial at Exhaustion | CR Trial at Iso-time Point | CR Trial at Exhaustion | |
|---|---|---|---|
| VE (l·min-1) | 123.9 (14.2) | 120.2 (14.7) | 127.3 (16.0) |
| VT (l) | 2.01 (.42 | 2.07 (.42) | 2.06 (.42) |
| fb (breath·min-1) | 63.8 (12.0 | 60.3 (13.4) | 64.2 (13.2) |
| Ti/Ttot (%) | 51.0 (2.9 | 50.0 (3.8) | 50.3 (3.2) |
| VO2 (ml·kg-1·min-1) | 58.2 (5.8 | 58.3 (5.8) | 59.6 (4.1) |
| HR (beats·min-1) | 177.4 (6.8) * | 179.2 (7.9) * | 182.6 (7.6) |
| RPB | 8.7 (1.4) | 6.9 (1.4) * | 9.1 (.8) |
| RPE | 18.9 (1.3) | 16.6 (1.8) *† | 18.8 (1.2) |
VE, minute ventilation; VT, tidal volume; fb, breathing frequency; Ti/Ttot, duty cycle; VO2, oxygen consumption; HR, heart rate; RPB, rating of perceived breathlessness; RPE, rating of perceived exertion.
* Significantly different from the CR trial at exhaustion (p < 0.05).
† Significantly different from the CR_F trial at exhaustion (p < 0.05).