Table 1.
Initial characteristics of the participants.
| Characteristics | IMT group (n = 21) | Control group (n = 21) | P |
| Sex, M/F | 17 (80.9)/4 (19.1) | 16 (76.2)/5 (23.8) | .707 |
| Age, yr | 48.3 ± 8.5 | 47.8 ± 9.2 | .856 |
| BMI, kg/m2 | 28.5 ± 3.8 | 27.9 ± 4.3 | .634 |
| Respiratory rate breaths/min | 22.2 ± 2.3 | 21.7 ± 1.9 | .447 |
| Duration of MV, d | 13.3 ± 7.6 | 12.9 ± 8.4 | .872 |
| APACHE II score at ICU admission | 8.2 ± 2.4 | 8.6 ± 2.7 | .614 |
| P/F ratio n (%) before MV | |||
| Mild | 0 (0) | 0 (0) | .553 |
| Moderate | 10 (47.6) | 8 (38.1) | |
| Severe | 11 (52.4) | 13 (61.9) | |
| Medications n (%) | |||
| Corticosteroids | 14 (66.6) | 16 (76.2) | .494 |
| Muscle relaxant | 21 (100) | 21 (100) | 1.000 |
| Sedatives | 21 (100) | 21 (100) | 1.000 |
Continuous variables are presented as mean ± standard deviation; categorical variables are presented as frequency (percentage).
APACHE = acute physiology and chronic health evaluation, BMI = body mass index, F = females, ICU = intensive care unit, IMT = inspiratory muscle training, M = males, MV = Mechanical ventilation, P/F = oxygen tension (PO2)/ fraction of inspired oxygen (FIO2).