• Alex R Jenkins, Holly Gowler, Ffion Curtis, Neil S Holden, Christopher Bridle, and Arwel W Jones.
• Lincoln Institute for Health, University of Lincoln, Lincoln, UK.
• Int J Chron Obstruct Pulmon Dis. 2018 Jan 1; 13: 257-273.

IntroductionThe clinical benefit of continued supervised maintenance exercise programs following pulmonary rehabilitation in COPD remains unclear. This systematic review aimed to synthesize the available evidence on the efficacy of supervised maintenance exercise programs compared to usual care following pulmonary rehabilitation completion on health care use and mortality.MethodsElectronic databases (MEDLINE, Embase, CINAHL, Cochrane Central Register of Controlled Trials, Web of Science, and PEDro) and trial registers (ClinicalTrials.gov and Current Controlled Trials) were searched for randomized trials comparing supervised maintenance exercise programs with usual care following pulmonary rehabilitation completion. Primary outcomes were respiratory-cause hospital admissions, exacerbations requiring treatment with antibiotics and/or systemic corticosteroids, and mortality.ResultsEight trials (790 COPD patients) met the inclusion criteria, six providing data for meta-analysis. Continued supervised maintenance exercise compared to usual care following pulmonary rehabilitation completion significantly reduced the risk of experiencing at least one respiratory-cause hospital admission (risk ratio 0.62, 95% confidence interval [CI] 0.47-0.81, P<0.001). Meta-analyses also suggested that supervised maintenance exercise leads to a clinically important reduction in the rate of respiratory-cause hospital admissions (rate ratio 0.72, 95% CI 0.50-1.05, P=0.09), overall risk of an exacerbation (risk ratio 0.79, 95% CI 0.52-1.19, P=0.25), and mortality (risk ratio 0.57, 95% CI 0.17-1.92, P=0.37).ConclusionIn the first systematic review of the area, current evidence demonstrates that continued supervised maintenance exercise compared to usual care following pulmonary rehabilitation reduces health care use in COPD. The variance in the quality of the evidence included in this review highlights the need for this evidence to be followed up with further high-quality randomized trials.

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