Fig. 1

The association of total physical activity with all-cause mortality risk in participants with COPD (n = 2155). The figure shows the dose-response association of total physical activity (PA) with all-cause mortality risk based on adherence to the general PA recommendations. Participants were classified as ‘Inactive’ (0 MET-hours/week of total PA), ‘Insufficiently Active (Low)’ (< 3.75 MET-hours/week of total PA), ‘Insufficiently Active (High)’ (3.75 to < 7.5 MET-hours/week of total PA), or ‘Sufficiently Active’ (≥7.5 MET-hours/week of PA)