Table 4.
Comparison of respiratory variables measured with the manovacuometer, ventilometer and with the Powerbreathe® between the preoperative, the first and fifth postoperative days of the inspiratory muscle training group and control group
|
GTMI (n = 21)
|
CG (n = 20)
|
P value2 | |||||
|
Variables
|
Pre-op
|
PO first day1
|
PO fifth day
|
Pre-op
|
PO first day
|
PO fifth day
|
|
| Manovacuometer | |||||||
| PIM (cmH2O) | 110.9 ± 41 | 71.6 ± 42 | 115.6 ± 51 | 115.4 ± 73 | 77.9 ± 56 | 99.6 ± 68 | 0.0131 |
| PEM (cmH2O) | 101.0 ± 28 | 58.1 ± 26 | 83.1 ± 30 | 103.5 ± 43 | 63.0 ± 37 | 84.8 ± 42 | 0.6186 |
| Ventilometer | |||||||
| CV (liters/min) | 2789 ± 938 | 1423 ± 589 | 1937 ± 585 | 2705 ± 836 | 1356 ± 392 | 1737 ± 541 | 0.6014 |
| VT (mL) | 483.2 ± 273 | 425.2 ± 183 | 543.7 ± 221 | 473.1 ± 213 | 354.9 ± 161 | 474.2 ± 162 | 0.2866 |
| VM (liters/min) | 6905 ± 3449 | 7060 ± 2753 | 11012 ± 5381 | 7732 ± 3849 | 6573 ± 2746 | 9117 ± 3325 | 0.2091 |
| Powerbreathe® | |||||||
| Energy (joules) | 1.24 ± 1.4 | 0.61 ± 1.2 | 0.57 ± 0.3 | 0.87 ± 0.2 | 0.30 ± 0.1 | 0.52 ± 0.2 | 0.3098 |
| Flow (liters/min) | 1.78 ± 1.0 | 0.86 ± 0.8 | 1.21 ± 0.5 | 1.52 ± 0.7 | 0.64 ± 0.3 | 0.93 ± 0.4 | 0.4224 |
| Power (watts) | 0.99 ± 1.2 | 0.53 ± 1.0 | 0.53 ± 0.2 | 0.67 ± 0.3 | 0.32 ± 0.2 | 0.42 ± 0.2 | 0.3533 |
| Pressure (cmH2O) | 4.86 ± 2.0 | 4.53 ± 1.7 | 4.31 ± 0.2 | 4.32 ± 0.2 | 4.11 ± 0.1 | 4.31 ± 0.5 | 0.1405 |
| Volume (liters) | 1.82 ± 0.8 | 0.84 ± 0.5 | 1.15 ± 0.4 | 1.75 ± 0.5 | 0.61 ± 0.2 | 0.85 ± 0.2 | 0.0583 |
1
In Po1 all respiratory measurements were statistically lower (P ≤ 0.0001).
2
The statistical test used was ANOVA for repeated measures with transformation by rank of the effect of the interaction between groups and times.
GTMI: Inspiratory muscle training group; PO: Post-operative; CG: Control group; Pre-op: Pre-operative; PIM: Maximum inspiratory pressure; PEM: Maximum inspiratory pressure; VC: Vital capacity; VT: Tidal volume; VM: Minute volume.