Table 3—

Correlation coefficients between clinical characteristics and mean physical activity in 163 patients with chronic obstructive pulmonary disease

Steps per dayTime of at least moderate activity minsPhysical activity level
GOLD stages-0.58-0.46-0.52
6MWD0.630.470.46
FEV1 % pred0.460.310.42
MMRC grade-0.57-0.46-0.44
BODE score-0.62-0.44-0.49
  • GOLD: Global Initiative for Chronic Obstructive Lung Disease; 6MWD: 6-min walk distance; FEV1: forced expiratory volume in one second; % pred: % predicted; MMRC: modified Medical Research Council dyspnoea scale; BODE: body mass index, airway obstruction, dyspnoea, exercise capacity. Correlations are indicated by Pearson correlations coefficients (FEV1 and 6MWD) and Spearman rank coefficients (GOLD stages, MMRC and BODE score). For every correlation p<0.001.