Hypertension, Pulmonary, Hypoxia, Pulmonary Disease, Chronic Obstructive
Conditions
Keywords
Exercise Therapy
Brief summary
Patients with severe Chronic Obstructive Pulmonary Disease (COPD) and low oxygen levels in the blood are at risk of developing pulmonary hypertension and strain on the right side of the heart, both of which are known to increase symptoms and worsen prognosis It is not fully established whether interval exercise training in patients with severe COPD and concomitant low oxygen levels is beneficial. This study aims to evaluate the effects of aerobic interval exercise training in patients with severe COPD and low oxygen levels in the blood, with a particular emphasis on such effects on the cardiovascular system and pulmonary circulation.
Interventions
Exercise training intervention as described earlier.
Sponsors
Study design
Eligibility
Inclusion criteria
* Chronic Obstructive Pulmonary Disease (COPD) * Forced Expiratory Volume 1 second (FEV1) \<60% of predicted * FEV1%FVC \<70 % of predicted (FVC = Forced Vital Capacity) * Qualify for Long term oxygen therapy (LTOT), or presence of significant desaturation on exercise.
Exclusion criteria
* Unstable ischaemic heart disease or valvular heart disease. * Active malignant disease. * Substance abuse. * Physical or mental disability that prevents participation in the exercise programme or testing. * Pregnancy. * Exacerbation of COPD or respiratory tract infection last 6 weeks before. * Completed pulmonary rehabilitation programme or other organised exercise programme last 3 month * Use of high doses of systemic steroids.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Pulmonary artery pressure | Change from baseline at 10 weeks | Examined by right heart catheterisation |
Other
| Measure | Time frame | Description |
|---|---|---|
| Cardiac function | Change from baseline at 10 weeks | assessed by echocardiography |
| Respiratory function | Change from baseline at 10 weeks | assessed by spirometry |
| Functional capacity | Change from baseline at 10 weeks | assessed by shuttle walk test |
| Symptoms | Change from baseline at 10 weeks | COPD Assessment Test (CAT) |
| Quality of life | Change from baseline at 10 weeks | St George Respiratory Questionnaire (SGRQ) |
Countries
Norway