Subjects
COPD
COPD
Patients with COPD who enrolled in the multidisciplinary, six months outpatient PR at the Leuven Hospital were screened for eligibility. After completing three months of PR and after one-week PA assessment, patients were invited to participate to the STEP (‘Sustaining Training Effects through Physical activity promotion’) trial. Main inclusion criteria included being older than 40 years, having cognitive ability to work with electronic devices and absence of comorbidities that interfere with the normal biomechanical movement patterns and therefore PA performance. Further details are outlined in the additional file 1.