Aim of this study is to investigate whether and to what extent a cautious respiratory and exercise therapy can complement medical treatment and change the condition, oxygen uptake, quality of life, the pulmonary vascular pressures, the size of the right heart and the 6-minute walk distance in patients with pulmonary hypertension.

Inclusion Criteria:

• Consent form
• men and women> 18 years <75 years
• invasively confirmed chronic PH who have received complete diagnostic evaluation by specialized doctors / physicians according to the WHO classification at a center for pulmonary hypertension and were adjusted for 2 months under intensive medical therapy and are stable.

Exclusion Criteria:

• Pregnancy or lactation
• Change in medication during the last 2 months
• Patients with signs of right heart decompensation
• severe walking disturbance
• uncertain diagnoses
• No previous invasively confirmation of PH
• acute diseases, infections, fever
• Serious lung disease with FEV1 <50% or TLC <70% of target
• Further exclusion criteria are the following diseases: active myocarditis, unstable angina pectoris, exercise-induced ventricular arrhythmias, congestive heart failure, significant heart disease, pacemakers, and hypertrophic obstructive cardiomyopathy, or a highly reduced left ventricular function