Exercise Training in Heart Failure Management

Exercise training has emerged as a cornerstone in the multidisciplinary management of heart failure, offering both symptomatic relief and measurable improvements in cardiovascular reserve. In patients with reduced and preserved ejection fraction alike, structured programmes of aerobic, resistance and high-intensity interval training enhance peak oxygen uptake, augment skeletal muscle perfusion and mitigate peripheral deconditioning. Across diverse clinical settings, tailor-made regimens under supervised or remotely guided protocols promote improvements in exercise tolerance, functional capacity and quality of life, while reducing hospital readmissions. Mechanistically, exercise stimulates endothelial nitric oxide bioavailability, modulates inflammatory mediators and upregulates mitochondrial oxidative phosphorylation in skeletal muscle. Safety data support the long-term feasibility of exercise training, with careful risk stratification and incremental progression of intensity. International guidelines now advocate integration of exercise as a standard adjunct to pharmacotherapy, emphasising its global significance in reducing the burden of heart failure and enhancing daily living activities.

Research from Nature Portfolio

Recent studies have uncovered novel biochemical links between systemic inflammation and exercise intolerance in patients with heart failure and preserved ejection fraction. One investigation of fatty-acid derived eicosanoid metabolites demonstrated that specific pro- and anti-inflammatory lipid mediators correlate with impaired cardiopulmonary performance during invasive exercise testing. These findings suggest that modulation of eicosanoid pathways may represent a future avenue to enhance exercise capacity, offering targeted strategies to complement conventional training programmes and address persistent dyspnoea in this population.

Research from all publishers

A high-resolution respirometry study in older adults with preserved ejection fraction revealed pronounced deficits in skeletal muscle mitochondrial respiration linked to both complex I and complex II activity. These mitochondrial impairments were strongly associated with reductions in peak oxygen uptake and six-minute walk distance, reinforcing the concept that peripheral bioenergetic dysfunction underpins exercise intolerance.

An updated literature review spanning the past five years confirms that supervised aerobic and combined training regimens consistently raise peak oxygen uptake, improve ventilatory threshold and extend walking distance in patients with preserved ejection fraction. However, these training benefits occur with minimal alterations in resting diastolic or systolic function, implying that peripheral adaptations drive the observed clinical gains.

A seminal haemodynamic comparison between heart failure patients and healthy controls at matched workloads identified pulmonary capillary wedge pressure, body mass index and stroke volume as the principal determinants of exercise capacity. This work highlights the importance of de-loading left-sided filling pressures and optimising peripheral conditioning through exercise to achieve meaningful improvements in functional status.

Exercise Training in Heart Failure Management publication trend

The graph below shows the total number of articles in exercise training in heart failure management across all publications each year (not limited to Nature Index journals).

Technical terms

Heart failure with preserved ejection fraction (HFpEF): A form of heart failure in which left ventricular ejection fraction remains normal but diastolic dysfunction and comorbidities limit exercise capacity.

Peak oxygen uptake (peak VO₂): The maximal rate of oxygen consumption measured during incremental exercise, reflecting cardiorespiratory fitness.

Cardiopulmonary exercise testing (CPET): A diagnostic procedure that assesses respiratory gas exchange and cardiovascular response during controlled exercise to evaluate functional capacity.

Eicosanoids: Bioactive lipid mediators derived from fatty acids that regulate inflammation and vascular tone, implicated in exercise intolerance.

Mitochondrial oxidative phosphorylation: The cellular process by which mitochondria generate ATP through electron transport and chemiosmotic coupling, essential for muscle performance.

References

1. Eicosanoid and eicosanoid-related inflammatory mediators and exercise intolerance in heart failure with preserved ejection fraction. Nature Communications (2023).
2. Skeletal Muscle Mitochondrial Respiration and Exercise Intolerance in Patients With Heart Failure With Preserved Ejection Fraction. JAMA Cardiology (2023).
3. Central and Peripheral Determinants of Exercise Capacity in Heart Failure Patients With Preserved Ejection Fraction. JACC Heart Failure (2019).
4. Effects of Exercise on Heart Failure with Preserved Ejection Fraction: An Updated Review of Literature. Journal of Cardiovascular Development and Disease (2022).
5. Clinical Utility of Exercise Training in Heart Failure with Reduced and Preserved Ejection Fraction. Clinical Medicine Insights Cardiology (2015).