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Table 1 Anthropometric, spirometric, lung volumes and nocturnal PSG data in the OSA group and non-OSA group for men and women

From: Impact of obstructive sleep apnea on lung volumes and mechanical properties of the respiratory system in overweight and obese individuals

Variables

Men (n = 193)

Women (n = 70)

Non-OSA group (n = 87)

OSA group (n = 106)

p-Value

Non-OSA group (n = 35)

OSA group (n = 35)

p-Value

Age, years

44 ± 8

45 ± 10

0.605

47 ± 9

50 ± 9

0.091

Height, cm

172 ± 5.5

171 ± 6.3

0.269

158 ± 5.1

157 ± 6.0

0.266

Weight, kg

82 ± 10.4

90 ± 14.8

<0.001

74 ± 12.3

75 ± 13.5

0.698

BMI, kg/m2

28.0 ± 3.0

30.5 ± 4.2

<0.001

29.7 ± 4.9

30.7 ± 5.1

0.388

FVC, L

4.19 ± 0.50

4.06 ± 0.62

0.117

3.07 ± 0.49

2.83 ± 0.61

0.075

FEV1, L

3.36 ± 0.44

3.28 ± 0.53

0.188

2.47 ± 0.42

2.31 ± 0.47

0.125

FEV1/FVC, (% pred)

100 ± 6.0

101 ± 6.4

0.285

101 ± 7.4

103 ± 6.9

0.231

PEF, L/s

8.36 ± 1.33

8.12 ± 1.60

0.266

6.02 ± 1.10

5.78 ± 0.97

0.350

MEF75, L/s

7.16 ± 1.38

6.86 ± 1.40

0.132

5.39 ± 1.27

5.31 ± 1.15

0.785

MEF50, L/s

4.02 ± 0.96

3.80 ± 1.13

0.158

3.29 ± 1.13

3.04 ± 0.84

0.300

MEF25, L/s

1.43 ± 0.52

1.35 ± 0.56

0.138

1.12 ± 0.61

0.98 ± 0.40

0.275

MEF25–75, L/s

3.30 ± 0.87

3.13 ± 0.98

0.325

2.59 ± 0.97

2.40 ± 0.71

0.355

ERV, L

1.56 ± 0.55

1.26 ± 0.53

<0.001

1.09 ± 0.53

0.83 ± 0.40

0.022

FRC, L

3.73 ± 0.57

3.40 ± 0.62

<0.001

2.87 ± 0.57

2.60 ± 0.47

0.037

TLC, L

6.24 ± 0.61

6.08 ± 0.74

0.103

4.70 ± 0.48

4.50 ± 0.62

0.140

RV, L

2.17 ± 0.38

2.15 ± 0.41

0.740

1.78 ± 0.32

1.77 ± 0.32

0.953

IC, L

2.51 ± 0.55

2.68 ± 0.56

0.041

1.83 ± 0.39

1.90 ± 0.45

0.494

VC, L

4.07 ± 0.56

3.93 ± 0.64

0.124

2.92 ± 0.45

2.73 ± 0.53

0.102

ERV/TLC, %

25.0 ± 8.2

20.5 ± 7.8

<0.001

23.0 ± 9.4

18.4 ± 8.4

0.035

FRC/TLC, %

59.8 ± 7.5

55.9 ± 7.4

<0.001

61.0 ± 8.0

57.2 ± 7.8

0.046

RV/TLC, %

34.8 ± 5.6

35.5 ± 5.8

0.425

37.9 ± 6.3

39.5 ± 6.6

0.275

I C/TLC, %

40.2 ± 7.5

44.0 ± 7.6

0.001

39.1 ± 7.9

42.1 ± 8.0

0.121

VC/TLC, %

65.6 ± 5.6

64.6 ± 5.7

0.501

62.2 ± 6.3

60.5 ± 6.6

0.274

AI, events/h

0.2(0–4.4)

20.0(0–101.7)

<0.001†

0(0–2.7)

2.6(0–57.6)

<0.001†

HI, events/h

2.4(0–9.2)

9.7(0.1–40.9)

<0.001†

2.7(0–6.5)

20.0(2.8–86)

<0.001†

AHI, events/h

3.6(0–10)

30.8(10.4–102.1)

<0.001†

3.2(0–6.5)

23.6(5.4–86.2)

<0.001†

  1. Abbreviations: BMI body mass index, FVC forced vital capacity, FEV 1 forced expiratory volume in 1 s, FEV 1 /FVC(%, pred) ratio of FEV1 to FVC (ratio of the value to the predicted FEV1/FVC), PEF peak expiratory flow, MEF 75,50,25 maximal expiratory flow at 75 %, 50 %, and 25 % of FVC, ERV expiratory reserve volume, FRC functional residual capacity, RV residual volume, TLC total lung capacity, IC inspiratory capacity, VC vital capacity, ERV/TLC ratio of ERV to TLC, AI apnea index, HI hypopnea index, AHI apnea + hypopnea index. Normally distributed data are expressed as mean ± SD; AI, HI and AHI are expressed as median (range). Comparison was made between the groups using the Independent-Samples t-test or t’-test, when data for variables showed a normal distribution and homogeneity or inhomogeneity of variances, otherwise, Wilcoxon test was used. A p-value below 0.05 was considered to be significant. † represents Mann–Whitney-Wilcoxon test
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BMC Pulmonary Medicine

ISSN: 1471-2466

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