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Table 4 Results of the cardiopulmonary exercise testing (CPET) in the study population (n = 25) in total as well as divided in groups based on the MRC score (0-1, 2, 3-4).

From: MRC chronic Dyspnea Scale: Relationships with cardiopulmonary exercise testing and 6-minute walk test in idiopathic pulmonary fibrosis patients: a prospective study

    

MRC

 

Total

0-1

2

3-4

 

N

Mean

SD

N

Mean

SD

N

Mean

SD

N

Mean

SD

VO2 peak (ml/min)

25

1233.28

437.61

10

1391.80

305.87

8

1307.75

573.62

7

921.71

281.54

VO2 peak (%)

24

73.38

19.11

9

83.89

15.02

8

70.00

20.71

7

63.71

17.56

VO2 peak/kg (ml/kg/min)

25

15.46

3.90

10

18.38

2.68

8

14.49

3.24

7

12.41

3.40

AT (ml/kg/min)

21

11.57

3.48

10

12.97

2.68

5

11.36

2.95

6

9.42

4.36

Oxygen pulse (ml/beat)

25

9.19

2.83

10

10.16

2.31

8

9.51

3.36

7

7.44

2.35

Oxygen pulse (%)

24

78.17

22.62

9

92.22

23.69

8

70.25

14.27

7

69.14

22.36

SPO2 peak

25

87.72

5.68

10

93.00

3.62

8

84.00

3.30

7

84.43

4.39

VE peak (L/min)

25

54.20

17.52

10

56.20

15.82

8

54.50

19.26

7

51.00

20.03

VE peak (%)

24

78.08

19.72

9

75.89

17.07

8

72.50

15.43

7

87.29

26.01

BR peak %

25

27.32

21.18

10

36.00

17.96

8

25.75

22.18

7

16.71

21.82

VE/VCO2

25

40.00

13.52

10

29.00

6.32

8

43.13

12.03

7

52.14

10.75

HR reserve

25

19.20

17.99

10

20.20

22.11

8

19.00

17.17

7

18.00

14.62

HR recovery

25

14.48

8.30

10

19.39

5.76

8

13.25

10.48

7

8.86

4.34

VE/VCO2 at AT

21

41.00

10.46

10

35.10

3.84

5

39.20

7.66

6

52.33

11.71

VT/IC

25

0.81

0.14

10

0.82

0.15

8

0.82

0.07

7

0.80

0.21

Borg scale at peak exercise

25

4.84

2.30

10

3.00

1.83

8

6.75

1.17

7

5.29

1.98

  1. All values are shown as mean ± standard deviation (SD)
  2. VO2 peak oxygen uptake at peak exercise, AT anaerobic threshold, SPO2 oxygen saturation, VE peak minute ventilation at peak exercise, VE/VCO2 slope: slope of relationship between VE and VCO2, HR Heart rate, VT tidal volume, IC Inspiratory capacity