Physiological demands of singing for lung health compared with treadmill walking.
Keir Elmslie James PhilipAdam LewisSara C ButteryColm McCabeBishman ManivannanDaisy FancourtChristopher M OrtonMichael I PolkeyNicholas S HopkinsonPublished in: BMJ open respiratory research (2021)
ClinicalTrials.gov registry (NCT04121351).