this study aims to investigate the effect of low vs high volume- high intensity interval training on functional capacity and quality of life in chronic heart failure patients
Chronic stable heart failure patient with reduced ejection fraction (EF <40)
Age Above 18 years old
Both males and females
The ability to provide informed consent
Based on the Scientific Statement from the American Heart Association: contraindications for exercise Testing and Training. (Fletcher et al., 2013)
Acute myocardial infarction (MI), within 2 days
Ongoing unstable angina
Uncontrolled cardiac tachy or brady arrhythmia with hemodynamic compromise
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Egypt