High Protein and Energy Diet for Better Coughing in COPD Patients

40 patients with COPD randomized to diet with protein 1.3 g/kg/day or habitual intake: Primary endpoint (before-after): Leicester Cough Questionnaire Secondary endpoints: ADL-score, no. daily cough periods, development in FEV1 and FVC, hand-grib-strenght, use of respiratory medications, smoking, appetite, admissions to hospital, antibiotics and/or steroids, oxygen saturation, FFM (BIA), Coughs tests in spirometer and peak-flow-meter Study period: 2 months