We employed Cochrane threat of bias (RoB) to evaluate study top quality and synthesised knowledge narratively. From 8912 hits, we bundled thirteen reports: 11 ended up at higher RoB; 2 at reasonable RoB. PR enhanced purposeful work out ability in ten research, HRQoL in 12, and breathlessness in 9 https://directivepublications.org/journal-of-respiratory-medicine-and-research/