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Table 2 Results of spirometry, COPD assessment test, and physical fitness assessments

From: Decreased handgrip strength can predict lung function impairment in male workers: a cross sectional study

n

Overall

Men

Women

P value

475

 

366

 

109

 

Spirometry

 FVC (L)

3.73

(0.77)

4.02

(0.59)

2.75

(0.41)

<

0.001

 %FVC (%)

92.9

(11.2)

93.6

(11.1)

90.4

(11.3)

 

0.009

 FVC < LLN

70

(14.7)

41

(11.2)

29

(26.6)

<

0.001

 FEV1 (L)

3.07

(0.65)

3.31

(0.53)

2.29

(0.35)

<

0.001

 %FEV1 (%)

94.9

(12.34)

95.4

(12.4)

93.2

(12.1)

 

0.094

 FEV1 < LLN

68

(14.3)

49

(13.4)

19

(17.4)

 

0.28

 FEV1/FVC (%)

82.6

(5.93)

82.4

(6.02)

83.6

(5.54)

 

0.052

 %FEV1/FVC (%)

102.02

(7.06)

101.73

(7.15)

102.98

(6.69)

 

0.106

 FEV1/FVC < LLN

20

(4.2)

15

(4.1)

5

(4.6)

 

0.789

 Lung function impairment

99

(20.8)

64

(17.5)

35

(32.1)

 

0.002

Questionnaire

 COPD assessment test

8.85

(5.45)

9.02

(5.31)

8.29

(5.91)

 

0.223

 Physical fitness assessments

 Handgrip strength (kg)

40.78

(10.22)

45.17

(6.60)

26.06

(5.25)

<

0.001

 Sit-to-stand test (times)

29.45

(6.80)

29.81

(6.60)

28.25

(7.34)

 

0.036

  1. Data are shown in mean (standard deviation) for continuous values and in number (percentage) for categorical values. P values for comparisons between sexes are estimated by using Fisher’s exact tests or Mann-Whitney U tests where appropriate
  2. Lung function impairment was defined as a decline in FEV1, FVC or FEV1/FVC less than the LLN. Ever passive smoking was defined as being exposed currently or previously either at home or at the workplace
  3. FVC forced vital capacity, FEV1 forced expiratory volume in 1 s, LLN lower limit of normal
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BMC Pulmonary Medicine

ISSN: 1471-2466

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