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Table 1 Physical and Clinical Characteristics of patients with COPD and Controls

From: Daily physical activity and related risk factors in COPD

 COPD (n = 88)Comparator (n = 40)p
Gender Male: female46:4219:210.117
Age (years)66 (8)66 (7)0.923
Smoking (pack years)42.2 (24.8)22.9 (20.8)0.001
FEV1 (L)1.5 (0.8)2.6 (0.6)0.001
FVC (L)2.4 (0.9)3.4 (0.9)0.001
FEV1/FVC0.52 (0.1)0.78 (0.05)0.001
FEV1 (%)56 (17)106 (17)0.001
FVC (%)84 (19)112 (17)0.001
Resting O2 saturation (%)96 (2)98 (1)0.001
BMI (kg/m2)27.5 (5.2)28.6 (4.9)0.297
Waist:Hip ratio0.95 (0.09)0.89 (0.06)0.002
FFM (kg)49.5 (10.5)50.9 (9.1)0.486
FM (kg)24.8 (9.9)27.2 (10.3)0.243
FFM/FM2.3 (1.1)2.2 (1.1)0.556
FFMI (kg/m2)18.2 (2.4)18.5 (2.1)0.589
FMI (kg/m2)9.3 (3.9)10.1 (4.3)0.3
6MWD (m)336 (107)515 (88)0.001
Mean handgrip (kg)27.2 (9.6)29.7 (10.2)0.209
Fibrinogen (g/l) #3.8 (1.3)3.2 (0.6)0.012
HsCRP (mg/l)#3.3 (3.1)1.6 (3.2)0.023
No. Steps4095 (2720)6734 (3491)0.001
Time spent on moderate activity (hr)*1.3 (0.5–2.2)1.3 (0.7–2.1)0.662
No. Comorbidity1.3 (1.2)0.8 (0.8)0.027
  1. All data mean (SD) unless otherwise indicated *Median (range) # Geometric mean. Abbreviations: 6MWD six minute walk distance, BMI body mass index, FEV1 forced expiratory volume in 1 s, FVC forced vital capacity, FFM fat free mass, FFMI fat free mass index, FM fat mass, FMI fat mass index, HsCRP high sensitivity C- reactive protein.
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