NCT03660644.

Trial name or title	Physical activity following PR in patients with COPD
Methods	DESIGN 2 groups, cluster; COMPARISON intervention vs. no intervention; SAMPLE SIZE n = 60 Blinding: outcomes assessor, "Physiotherapists will be aware of the allocation of the programmes (not possible to blind) as they will be involved with delivering information/training of intervention components. A researcher blinded to group allocation will perform quantitative analysis."
Participants	Diagnosis of COPD; age 30 to 100 years; enrolled in PR within Lincolnshire Community Health Services; for telephone interviews: access to a telephone
Interventions	DURATION OF INTERVENTION 12 months following PR INTERVENTION PAC pedometer: report step count daily in paper diary group chat on WhatsApp NO INTERVENTION
Outcomes	ASSESSMENT TIME POINTS Baseline: during PR Mid‐intervention: 12 weeks post‐PR End intervention: 52 weeks post‐PR PRIMARY OUTCOME MEASURE Adherence : “acceptability” number of participants who comply with intervention SECONDARY OUTCOMES Physical activity: step count, sedentary time, time spent in different activity intensities, sleep, vector magnitude units HRQOL: CRQ Exercise capacity: ISWT
Starting date	Retrospectively registered; actual study start June 2018; first posted September 2018; estimated study completion October 2019
Contact information	Hayley Robinson hrobinson@lincoln.ac.uk Arwel Jones ArJones@lincoln.ac.uk University of Lincoln (UK)
Notes	Collaborators: NHS PR clinics across Lincolnshire, United Kingdom, British Lung Foundation, University College, University of Oxford