Table 6.
Respiratory variables per assessment period.
| Variables | Assessment 1 mean ± SD 95% CI (min-max) |
Assessment 2 mean ± SD 95% CI (min-max) |
Assessment 3 mean ± SD 95% CI (min-max) |
Assessment 4 mean ± SD 95% CI (min-max) |
p value |
|---|---|---|---|---|---|
| MIP (cmH20) | 44.1 ± 16.38 (32.38 55.81) | 43 ± 15.47∗ (31.92−54.07) | 52.6 ± 19.16∗& (38.88−66.31) | 46 ± 16.12& (34.46−57.53) |
p=0.001(GG) Effect size = 0.528 Power = 0.961 |
|
| |||||
| MEP (cmH20) | 37.9 ± 14.31 (27.65−48.14) | 36.1 ± 11.72∗(27.71−44.48) | 45.8 ± 12.4∗& (36.92−54.67) | 41.7 ± 10.9& (33.89−49.5) |
p=0.001 Effect size = 0.567 Power = 0.998 |
|
| |||||
| FVC (%) | 84.2 ± 19.64 (70.14−98.25) | 79.2 ± 18.17∗(66.2−92.19) | 94.8 ± 21.25∗ (79.59−110) | 87.4 ± 17.89 (74.59−100.2) |
p=0.001 Effect size = 0.374 Power = 0.954 |
|
| |||||
| FEV1 (%) | 88.1 ± 22.46 (72.02−104.17) | 86.09 ± 21.18 (71.85−100.32) | 91.5 ± 23.21 (74.89−108.1) | 85.8 ± 23.17 (69.21−102.38) | p=0.074 |
|
| |||||
| FEV1/FVC | 81.02 ± 10.04 (73.83−88.20) | 82. ± 7.97∗ (77.18−88.6) | 76.53 ± 7.53∗ (69.14−79.91) | 77.1 ± 7.65 (71.62−82.57) |
p=0.006 Effect size = 0.308 Power = 0.872 |
|
| |||||
| MVV (%) | 57.2 ± 24.74 (39.5−74.89) | 55.95 ± 24.91∗ (38.12−73.77) | 69.8 ± 18.85∗& (56.31−83.28) | 63.1 ± 21.47& (47.74−78.45) |
p ≤ 0.001 Effect size = 0.588 Power = 0.999 |
Source: the author (2020). Legend: SD: standard deviation; 95% CI: 95% confidence interval; min: minimum; max: maximum; MIP: maximum inspiratory pressure; MEP: maximum expiratory pressure; cmH2O: centimeters of the water column; %: percent; FVC: forced vital capacity; FEV1: forced expiratory volume; FEV1/FVC: tiffeneau index; MVV: maximum voluntary ventilation; GG: sphericity not assumed, greenhouse-Geisser correction used; ∗: astatistical difference between assessments 2 and 3; &: astatistical difference between assessments 3 and 4.