We used Cochrane possibility of bias (RoB) to evaluate review quality and synthesised details narratively. From 8912 hits, we integrated 13 scientific studies: 11 had been at high RoB; two at average RoB. PR improved practical training potential in ten studies, HRQoL in 12, and breathlessness in 9 reports. https://directivepublications.org/journal-of-respiratory-medicine-and-research/