Age

40–any

Sex

ALL

Healthy volunteers

Not accepted

1. Previous diagnosis of COPD according to spirometric criteria (post-bronchodilator FEV1 / FVC less than 70%)
2. Smoking exposure\> 10 paq/year.
3. Age greater than 40 years.
4. Hospitalization due to a COPD exacerbation
5. Written informed consent.

1. Patients needing the care of an Intensive Care Unit.
2. Patients who have been hospitalized more than once for a COPD exacerbation in the previous 12 months (at least 3 months from last discharge).
3. Patients with continuous oxygen therapy who do not have a portable source before admission.
4. Patients with severe hypoxemia at rest (SpO2 \<85% at rest) at discharge
5. Mental incapacity, severe comorbidity, general fragility or advanced age that could substantially difficult patient's participation in the study.
6. Patients who need mechanical aids for walking.
7. Patients participating in a pulmonary rehabilitation program.
8. Difficulty understanding Spanish / Catalan.

Efficacy of a Coaching Program to Promote Physical Activity and Reduce Sedentary Behavior After a COPD Hospitalization