Age

40–80

Sex

ALL

Healthy volunteers

Not accepted

Symptoms of ischaemic heart disease
Known heart failure
Unable to complete or understand HIIT training
Claudication
Symptoms of disease within 2 weeks prior to the study
Participation in pulmonary rehabilitation within 3 months
Known malignant disease
Pregnancy
Unstable cardiac arrhythmic disease
Renal or liver dysfunction
* Known chronic kidney or liver disease
* Elevated creatinine, urea, alanine transaminase (ALAT), aspartate transaminase (ASAT), bilirubin, basic phosphatases at blood test
Completion of pulmonary rehabilitation within the last 3 months

Cardiopulmonary Adaptations to High-intensity Interval Training (HIIT) in COPD