Table 1 Characteristics of study participants.

From: Quadriceps physiological response during the 1-min sit-to-stand test in people with severe COPD and healthy controls

 

COPD (n = 14)

Healthy controls (n = 12)

p value

Age, years

65 ± 8

65 ± 7

0.633

Female, n (%)

7 (50)

5 (42)

0.347

BMI, kg/m2

25 ± 3

24 ± 2

0.723

FFM, %

39 ± 5

37 ± 4

0.076

Smoking status, n (%)

 < 0.001

Former

14 (100)

3 (25)

 

Never

0 (0)

9 (75)

 

FEV1, % of predicted

38 ± 8

119 ± 13

 < 0.001

FVC, % of predicted

88 ± 12

127 ± 15

 < 0.001

FEV1/FVC, %

35 ± 7

76 ± 4

 < 0.001

RV, % predicted

159 ± 40

78 ± 14

 < 0.001

DLCO, % predicted

45 ± 11

80 ± 13

 < 0.001

mMRC dyspnea scale (0–4)

2.7 ± 0.5

1.7 ± 0.5

 < 0.001

Voorrips physical activity

5.6 ± 2.0

7.3 ± 2.8

0.172

1STS, number of repetitions

24 ± 5

31 ± 6

0.009

1STS, total work, repetitions*kg

1603 ± 517

2011 ± 540

0.006

  1. Data are presented as mean ± SD or number (percentages).
  2. FFM Fat-free mass, FEV1 Forced expiratory volume in 1 s, FVC Forced vital capacity, RV Residual volume, DLCO Diffusion capacity of the lung for carbon monoxide, mMRC Modified Medical Research Council, 1STS 1-min sit-to-stand test.
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