Table 2 Exercise capacity, muscular strength, degree of dyspnoea and quality of life in COPD patients, divided according to the presence of anemia

6MWD (m)

360.0 ± 123.6

267.9 ± 86.7

373.0 ± 122.8

0.001

VO2 _max (l/min)

1.2 ± 0.4

0.9 ± 0.2

1.2 ± 0.4

0.011

Handgrip (Kg)

29.7 ± 8.3

28.7 ± 6.5

29.8 ± 8.5

0.572

Quadriceps Strength (Kg)

21.1 ± 7.4

21.3 ± 5.1

21.0 ± 7.7

0.853

MRC Dyspnoea scale

1.8 ± 1.4

2.8 ± 1.1

1.6 ± 1.3

0.002

SGRQ Symptoms

47.3 ± 23.3

63.6 ± 20.0

45.3 ± 22.9

0.020

SGRQ Activity

54.6 ± 24.3

78.6 ± 15.9

51.6 ± 23.5

<0.0001

SGRQ Impact

32.0 ± 21.2

53.4 ± 25.7

29.4 ± 19.1

0.016

SGRQ Total

41.4 ± 20.2

62.8 ± 20.9

38.7 ± 18.6

0.005