Table 1 Baseline demographic and physiological characteristics

Sex, male:female

20:6

Age (years)

54.3 (14.5)

Estimated body weight (kg)

88.2 (27.7)

BMI (kg/m²)

27.3 (23.1–33.4)

Length of mechanical ventilation prior to IMT (days)

18.0 (11.8–25.2)

Length of stay (ICU) prior to IMT (days)

21.0 (12.7–28.5)

APACHE 2 score (admission)

25.8 (8.1)

SOFA score

7.0 (6.8–10.0)

NIF (cmH₂O)

32 (22.6–39.3)

CRP

50 (20.5–75.5)

P/F ratio (mmHg)

267.3 (75.0)

FiO₂

0.35 (0.08)

PaO₂ (mmHg)

88.4 (13.2)

P0.1 (cmH₂O)

− 1.3 (− 3.4 to − 1.3)

Pressure support (cmH₂O)

11.6 (5.2)

Positive end expiratory pressure (PEEP) (cmH₂O)

7.3 (2.2)

Vasopressor Inotrope Score

0.0 (0.0–4.0)

Barthel index

20 (20–20)