Figure 4From: Effects of nutraceutical diet integration, with coenzyme Q10 (Q-Ter multicomposite) and creatine, on dyspnea, exercise tolerance, and quality of life in COPD patients with chronic respiratory failureComparison (T0 vs T1) between Quality of Life questionnaire (SGRQ) in two groups. A significant improvement in quality of life (cut-off improvement > 4 points) in group A in activities section (- 6.63 pt) and total score (- 5.43 points). No significant change in group B.Back to article page