Development of a New Tool for Dyspnea Measurement in Chronic Respiratory Diseases

Inclusion Criteria: * 1\) Sample1: COPD GOLD / ATS \> 2 without major co-morbidity * Sample 1A: n = 50: group of patients with no change in usual care and no acute event (evaluation of reproducibility) * Sample1B: n = 60: patients assessed before and after a qualifying period of pulmonary rehabilitation * 2\) Sample 2 (n = 30): diffuse interstitial lung diseases Criteria: Pulmonary Fibrosis: Idiopathic or nonspecific interstitial lung diseases (NILD) according to international criteria (ATS), sarcoidosis with parenchymal lesions (old classification stage II and III), and exceptionally alveolar proteinosis. * 3\) Sample 3 (n = 30) primary or secondary arterial pulmonary hypertension (post embolic .....). * 4\) Sample4 (n = 30): Adult with Cystic fibrosis. * 5\) patient with stable Status (no exacerbation for at least one month) Exclusion Criteria: * 1\) Patient under 18 years * 2\) Inability to fill in questionnaires * 3\) Other respiratory disease * 4\) left symptomatic heart failure * 5\) Obesity with a BMI\> 35 kg/m2 * 6\) Inability to perform PFT (Pulmonary Function Testing) * 7\) Pregnant or breastfeeding woman * 8\) Patient unable to consent * 9\) Lack of social insurance coverage * 10\) Patient in exclusion period because of another protocol