Unstable comorbidity

Long term oxygen therapy or ventilation

Rehabilitation program during the past 12 months

nutritional supplementation during the past 4 weeks

allopurinol or N-acetylcystein during the past 4 weeks

long corticosteroid treatment during the past 6 months

hyperreactivity to xylocain

anticoagulant or platelet aggregation inhibitors treatment

participation to an other research study-pregnancy or impossibility to provide informed consent, ...

Muscle Training Induced Angiogenesis in COPD