Effects of Eccentric Exercise Training in Patients With COPD

Who May Qualify: - Having undergone pulmonary rehabilitation for more than 3 months - Sign the written willing to sign a consent form form - FEV1/FVC \< 0.70 - Approval for exercise training granted by a specialist physician's assessment - Specialist physician's approval for exercise training Who Should NOT Join This Trial: - Existing of tracheostomy - Those who use oxygen therapy or ventilator at home - Severe heart failure (NYHA III-IV) - Neuromuscular disease - Acute exacerbation within the past three months - Those who are unable to cooperate with the cardiopulmonary exercise test - Taking anticoagulant medications - Other conditions restricting exercise for over a year - Recent or planned significant cardiovascular surgery or intervention - Current or planned pregnancy within the next year - Planned heart transplant within the next six months - Heart failure due to uncorrectable valvular heart disease, congenital heart disease or obstructive cardiomyopathy - Inadequate ICD settings for exercise heart rate - Other exercise contraindications: unstable angina, uncontrolled blood pressure, orthostatic hypotension with symptoms, severe aortic stenosis, acute discomfort or fever, uncontrolled arrhythmias, uncompensated heart failure, acute pericarditis or myocarditis, recent thrombosis or thrombophlebitis, resting ST-segment deviation, uncontrolled diabetes, etc. Always talk to your doctor about whether this trial is right for you.