Exercise as a nonpharmacologic intervention in patients with heart failure

Area of Science:

• Cardiology
• Exercise Physiology
• Rehabilitation Medicine

Background:

• Heart failure (HF) significantly impairs patients' quality of life due to reduced exercise tolerance, characterized by dyspnea and fatigue.
• Traditional cardiac function measures (e.g., ejection fraction) poorly correlate with exercise capacity in HF patients.
• Peripheral factors, including vascular endothelial dysfunction, sympathetic nervous system hyperactivation, and skeletal muscle abnormalities, are implicated in HF-related exercise intolerance.

Purpose of the Study:

• To summarize the evidence supporting exercise training as a beneficial intervention for heart failure patients.
• To highlight the positive effects of exercise on peripheral adaptations and clinical outcomes in HF.

Main Methods:

• Review of clinical trials and guidelines over the past two decades.
• Analysis of the impact of exercise training on skeletal muscle metabolism, vascular function, and ventilatory capacity.

Main Results:

• Exercise training demonstrates a beneficial impact on skeletal muscle energy metabolism, vascular function, and ventilatory capacity in HF patients.
• Improvements in these physiological parameters correlate with enhanced exercise tolerance, reduced hospitalization rates, and better quality of life.
• Recent guidelines recommend individualized exercise training protocols for stable HF patients, including early mobilization and gradual intensity increases.

Conclusions:

• Exercise training is a cornerstone therapy for improving functional capacity and quality of life in heart failure.
• Physicians should prioritize prescribing individualized exercise programs for clinically stable HF patients, aligning with current international cardiology guidelines.