Table 1. Expiratory pulmonary ventilation (VE), heart rate (HR) and pulmonary oxygen uptake (VO2) after subtraction of oxygen uptake of cardiac and respiratory muscles (see methods for details). All the data are averages over the last 3 min of cycling at each intensity in control and fatigue conditions. Values are means (±SD).
Workload
(W) |
VE (l·min-1) |
HR (beats·min-1) |
Corrected VO2 (l·min-1) |
| Control |
Fatigue |
Control |
Fatigue |
Control |
Fatigue |
| 70 |
24.1 (4.7) |
26.6 (1.9) |
109 (14) |
113 (7) |
1.00 (.12) |
1.09 (.08) |
| 105 |
33.1 (5.6) |
37.7 (5.6) |
125 (16) |
131 (8) |
1.34 (.13) |
1.50 (.15) * |
| 140 |
43.3 (7.6) |
51.2 (10.7) * |
140 (19) |
149 (13) |
1.71 (.18) |
1.90 (.24) * |
| 175 |
60.7 (11.8) |
71.5 (17.5 ) ** |
158 (20) |
165 (13) |
2.23 (.28) |
2.41 (.25) ** |
* denote significant (p < 0.05 and p < 0.01, respectively) differences between control and fatigue conditions.** denote significant (p < 0.05 and p < 0.01, respectively) differences between control and fatigue conditions.
