Table 3.
CPET in the CTL and IMT group.
| Control group (n = 15) |
IMT group (n = 13) |
|||||
|---|---|---|---|---|---|---|
| CPET | Timepoint 1 | Timepoint 4 | p value | Timepoint 1 | Timepoint 4 | p value |
| Anaerobic threshold (AT) | ||||||
| Time (s) | 430.1 | 345.3 | .011* | 455.1 | 388.8 | .064 |
| Exercise time (s) | 355.9 | 275.1 | .002* | 381.4 | 323.2 | .019 |
| Work (watt) | 88.7 | 54.9 | .002* | 94.6 | 64.8 | .003* |
| VT | 1.2 | 0.8 | .004* | 1.2 | 0.9 | .002* |
| VE | 23.7 | 18.2 | .004* | 27.6 | 21.2 | .003* |
| VO2 | 14.1 | 9.8 | .004* | 13.7 | 10.8 | .043* |
| VO2ml | 909.1 | 597.1 | .003* | 963.1 | 683.8 | .007* |
| VCO2 VO2HR |
888.2 | 578 | .004* | 944.2 | 673 | .005* |
| VCO2HR | 7.7 | 5.1 | .003* | 8.7 | 5.9 | .003* |
| VE/VO2 | 28.4 | 32.5 | .038* | 29.3 | 31.4 | .142 |
| PTEO2 | 103.5 | 107.9 | .018* | 107.2 | 109.2 | .365 |
| Maximal value | ||||||
| Work (watt) | 141.1 | 90.2 | .009* | 125.1 | 101.6 | .011* |
| VT | 1.5 | 1.2 | .004* | 1.5 | 1.3 | .059 |
| RR | 26.3** | 31.9 | .03* | 33.5** | 33.4 | .889 |
| VO2 | 19.6 | 16.1 | .008* | 19.6 | 17.9 | .133 |
| VO2ml | 1271.4 | 977.9 | .004* | 1374 | 1116.6 | .023* |
| VO2HR | 9.4 | 7 | .006* | 10.2 | 7.8 | .006* |
| VE/VO2 | 31.7 | 38.6 | .013* | 35.7 | 38.8 | .263 |
Data were presented as mean ± SD. Nonparametric analysis – Wilcoxon sign rank test was used for within-group analysis and the Mann-Whitney U test was used for analysis between groups.
*p < .05 intragroup comparison; **p < .05 between group comparison.
AT: aerobic threshold; VT: tidal volume; VE: minute ventilation; VO2: oxygen consumption; VCO2: carbon dioxide output; VE/VO2: ventilator equivalent for oxygen; PTEO2: end-tidal pressure oxygen; RR: respiratory rate.