Increasing physical activity in severe asthma: a systematic review and meta-analysis.

"Conflict of interest: R.F. McLoughlin, V.L. Clark and P.D. Urroz have nothing to disclose. P.G. Gibson reports lecture honoraria from GSK, outside the submitted work. V.M. McDonald reports grants from GSK, AstraZeneca, NHMRC, Ramaciotti Foundation, MRFF and JHH Charitable Trust, outside the submitted work; and also reports the following leadership roles: Co-Director NHMRC Centre of Research Excellence in Treatable Traits, Co-Director NHMRC Centre of Research Excellence in Severe Asthma, Co-Director Priority Research Centre for Healthy Lungs, Co-Director Virus, Vaccines, Immumology and Asthma HMRI programme, Head of Research, School of Nursing and Midwifery, University of Newcastle and COPD-X Guideline."

"Support statement: This research was supported by the NHMRC Centre of Research Excellence in Asthma Treatable Traits, and the Hunter Medical Research Institute, Newcastle, Australia. Funding information for this article has been deposited with the Crossref Funder Registry."

"This study is registered at www.crd.york.ac.uk/PROSPERO with identifier number CRD42021210968."