Table 1 The changes in anthropometric, body composition, respiratory function and physical activity variables before and after surgery

Weight (Kg)

111.47 ± 13.98

88.05 ± 12.44

-23.42 ± 11.78

< 0.001

BMI (Kg/m²)

43.86 ± 4.39

34.72 ± 4.76

-9.14 ± 4.49

< 0.001

Fat mass (Kg)

60.07 ± 9.52

43.88 ± 67.33

-16.18 ± 8.44

< 0.001

Lean body mass (Kg)

51.34 ± 6.45

44.06 ± 6.17

-7.26 ± 4.09

< 0.001

MIP (cmH₂O)

62.11 ± 23.47

69.35 ± 19.86

7.24 ± 17.42

0.025

FEV1 (L)

2.50 ± 0.54

2.72 ± 0.58

0.22 ± 0.24

< 0.001

FEV1 (%)

87.12 ± 11.71

94.71 ± 9.92

7.59 ± 8.92

< 0.001

FVC (L)

3.02 ± 0.66

3.40 ± 0.77

0.38 ± 0.30

< 0.001

FVC (%)

87.18 ± 10.90

97.71 ± 9.58

10.53 ± 8.36

< 0.001

FEV1/FVC (%)

82.41 ± 5.44

79.75 ± 4.42

-2.65 ± 6.06

0.019

METs (M/w)

1238.75 ± 1631.72

2306.38 ± 1858.36

1067.25 ± 1251.71

<.001²

Activity level (n)

<.001³

 Low

20 (62.5%)

3 (9.6%)

-

 Moderate

5 (15.6%)

16 (50.0%)

-

 High

7 (21.9%)

13 (40.6%)

-

6MWTD (m)

439.75 ± 104.63

493.47 ± 90.72

53.71 ± 75.17

< 0.001