Miyahara 2001.

Methods	Study design: randomised controlled trial
Participants	Participants: n = 20 Included: COPD (moderate to severe) Baseline characteristics: Gender: not reported Age, years: not reported FEV1, % predicted: mean (SD) 40 (15)
Interventions	Intervention characteristics: Intervention group — Japanese traditional "Shigin" singing programme Duration (session): not reported Frequency: 5/week Length (program): 8 weeks Professional/s: not reported Session details: the Japanese traditional "Shigin" signing program requires slow and deep breaths during singing Intensity: dyspnoea score of 3‐5 (on BORG scale 0‐10) Control group — no training
Outcomes	Pulmonary function Respiratory muscle strength Peak exercise capacity Health‐related quality of life — Chronic Respiratory Disease Questionnaire, score
Notes	Abstract only Authors were contacted for further information, with no response