Table 2.
Number, percentage and differences of exhaustion criteria reached by individuals in the FS (fatigue symptoms) (N = 42) and NFS (no fatigue symptoms) (N = 43) groups
| Exhaustion criterion | Absolute number of individuals who reached the exhaustion criterion (relative number in %) | Differences between both groups | |
|---|---|---|---|
| Fatigue symptoms | No fatigue symptoms | p-value (Cramer-V) | |
| Plateau of HR | 5 (13.5%) | 6 (16.2%) | 0.744 (0.038) |
| Reaching maximum HR | 16 (43.2%) | 20 (55.6%) | 0.346 (0.111) |
| Plateau of V̇O2 | 10 (26.3%) | 12 (30.8%) | 0.665 (0.049) |
| Peak RER ≥ 1.15 | 29 (74.4%) | 35 (89.7%) | 0.077 (0.200) |
| Peak VE/ V̇O2 ≥ 35 | 28 (71.8%) | 27 (69.2%) | 0.804 (0.028) |
| Peak BF ≥ 50 | 4 (10.3%) | 7 (17.9%) | 0.329 (0.111) |
| Max. lactate > 10 mmol/l | 26 (61.9%) | 37 (86.0%) | 0.011* (0.276) |
| Perceived subjective general exhaustion ≥ 9 | 33 (82.9%) | 30 (76.9%) | 0.412 (0.092) |
The percentage of the group that reached the criteria more frequently and significant differences between groups are shown in bold
*p < 0.05
HR heart rate, V̇O2 volume oxygen, RER respiratory exchange ratio, BF breathing frequency, V̇E ventilation