We Applied Cochrane threat of bias (RoB) to evaluate examine high-quality and synthesised facts narratively. From 8912 hits, we included thirteen experiments: 11 had been at significant RoB; two at reasonable RoB. PR enhanced purposeful physical exercise potential in 10 reports, HRQoL in 12, and breathlessness in nine studies. https://directivepublications.org/journal-of-respiratory-medicine-and-research/