“…Quality assessment of the included studies with the Delphi List In total, 3569 patients with a mean age of 69.1 years and a mean FEV 1 of 39.4% predicted (data gathered from 35 studies, as seven of the included studies did not report the mean FEV 1 % pred) were enrolled in the included studies.Studies evaluated the effect of the applied intervention on patients' exercise capacity (n=23, ES range −1.8-5.0)[21,22,, muscle strength (n=11, ES −0.5-1.5)[26, 27, 36-38, 40-43, 45, 46], lung function (n=17, ES −3.0-1.4)[22, 24-26, 30, 32, 33, 37, 39, 40, 42, 46-51], functionality (n=7, ES −1.7-6.8) [31, 40, 41, 45, 46, 52, 53], physical activity levels (n=3, ES 1.2-2.6) [26, 41, 47], vital signs and peripheral oxygen saturation (n=10, ES −3.1-3.4) [24, 29, 31, 32, 36, 37, 39, 42, 48, 50], symptoms (n=26, ES −4.0-4.8) [20-25, 28, 29, 31-34, 36, 37, 42, 45-55], impact of disease (n=4, ES −5.1-0.9) [30, 31, 44, 49], disease severity (n=3, ES −4.7-−0.3) [22, 29, 31], HRQoL (n=25, ES −3.0-6.1) [18, 20-24, 26, 28-31, 33, 35, 36, 38, 39, 42, 46-48, 51, 55-58], length of stay (n=19, ES −0.8-0.9)[20, 22, 25, 26, 30, 36, 37, 40-43, 45, 46, 48, 49, 51-53, 56], new exacerbations (n=4, ES 0.1-1.0)[23,33,36,38], hospital readmissions (n=14, ES 0.1-1.8)[19,21,22,29,33,35,38,43,44,47,52,[56][57][58], and mortality (n=10, ES 0.1-1.2)[18,19,21,22,37,44,54,[56][57][58]. Additionally, studies also assessed patients' knowledge (n=4, ES −0.3-15.1)[21,47,56,59], satisfaction (n=4, ES 0.2-9.3)[47,…”