In this 3 month, randomized (1:1 ratio), parallel-group, multicenter trial, patients in both groups (control and coaching) will receive information and guidance on the benefits associated with increased physical activity in COPD patients and their health status. Patients in both groups will use two PROactive monitors (ActiGraph® and DynaPort®) and a PDA to complete the PROactive questionnaire. In addition to above, the patients in the coaching group will receive daily coaching by a semiautomated system and coaching by the investigator during study visits.
