Table 4 Results of respiratory movements measured by RMMI related to previous pulmonary disease and need of prolonged mechanical ventilation. Mean (SD), median [min-max]

Yes

n = 14

No

n = 35

p-value

< 20 days

n = 38

≥ 20 days

n = 11

p-value

Tidal volume breathing

Upper thoracic

% pred

76.6 (48.6)

59.5 (23.6–206.2]

78.4 (43.1)

68.5 [18.3–204.1]

0.677

84.2 (47.0)

71.0 [18.3–206.2]

56.0 (23.1)

53.5 [28.7–105.3)

0.045

< 70% of pred

9 (64.3%)

13 (37.1%)

0.750

19 (46.3%)

9 (81.8%)

0.087

Lower thoracic

% pred

66.9 (45.0)

62.3 [20.8–191.3]

92.8 (55.3)

74.2 [21.2–202.4]

0.132

91.3 (49.7)

77.4 [28.1–199.3]

65.2 (63.4)

44.1 [20.8–202.4]

0.023

< 70% of pred

8 (57.1%)

16 (45.7%)

0.538

15 (36.5%)

9 (81.8%)

0.018

Abdominal

% pred

70.5 (36.7)

80.4 [16.0–128.5]

84.2 (47.4)

70.4 [21.8–255.19

0.582

78.4 (39.6)

77.6 [16.0–220.3]

86.9 (60.7)

65.5 [35.3–255.1]

0.048

< 70% of pred

6 (42.9%)

17 (48.6%)

0.761

16 (39.0%)

7 (63.6%)

0.306

Upper thoracic/abd

%

130.8 (84.7)

95.1 [38.7–358.3]

102.2 (45.4)

97.7 [31.4–207.9]

0.493

121.1 (62.9)

106.7 [31.4–358.3]

73.1 (23.7)

71.2 [41.3–113.0]

0.006

> 100% n (%)

6 (42.9%)

16 (45.7%)

0.761

21 (51.2%)

2 (18.2%)

0.042

Yes

n = 11

No

n = 31

p-value

< 20 days n = 34

≥20 days n = 11

p-value

Deep breathing

Upper thoracic

% pred

59.4 (62.4)

17.0 [5.5–180.6]

64.6 (54.5)

56.6 [4.2–154.3]

0.797

74.0.6990 (58.4)

83.4 [4.2–180.6]

28.9 (32.1)

17.3 [4.2–104.3]

0.039

< 70% of pred

8 (72.7%)

17 (54.8%)

0.885

16 (47.1%)

9 (81.8%)

0.079

Lower thoracic

% pred

63.2 (64.5)

21.3 [4.3–164.5]

72.3 (64.5)

65.6 [4.7–205.6]

0.500

79.7 (61.4)

94.0 [4.7–202.4]

37.6 (63.9)

8.3 [4.3–205.6]

0.024

< 70% of pred

8 (72.7%)

16 (51.6%)

0.759

15 (44.1%)

9 (81.8%)

0.040

Abdominal

% pred

50.0 (51.0)

21.6 [6.4–165.0]

70.6 (55.2)

71.0 [8.4–168.2]

0.230

72.4 (56.2)

76.8 [6.4–168.2]

38.8 (39.8)

21.3 [11.2–127.8]

0.302

< 70% of pred

9 (81.8%)

15 (48.4%)

0.356

15 (44.1%)

9 (81.8%)

0.040

Upper thoracic/Abd

%

149.0 (173.6)

96.9 [29.3–703.9]

90.5 (58.0)

82.1 [25.7–314.6]

0.377

120.0 (120.9)

87.2 [25.7–703.9]

73.7 (50.3)

56.3 [29.3–202.3]

0.089

> 100%,n (%)

7 (63.6%)

11 (35.5%)

0.512

15 (44.1%)

3 (27.3%)

0.482