Why the study?
Exercise training is an effective supplementary treatment for heart failure, but the optimal exercise regimen remains controversial.
Does high-intensity interval training improve exercise capacity, cardiac function, and quality of life compared to moderate-intensity continuous training in patients with heart failure with reduced ejection fraction?
Comparison
High-intensity interval training vs moderate-intensity continuous training
Design
Systematic review and meta-analysis of randomized controlled trials
Key result
High-intensity interval training significantly improved peak oxygen uptake compared to moderate-intensity continuous training (MD 1.78; 95% CI 0.80-2.76) in patients with HFrEF.
Authors
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HIIT may be prioritized over MICT in HFrEF to boost aerobic capacity; reinforces Level 1 meta-analytic support for exercise training.
Meta-Analysis
Does high-intensity interval training improve exercise capacity, cardiac function, and quality of life compared to moderate-intensity continuous training in patients with heart failure with reduced ejection fraction?
Mean Difference: 1.78 (95% CI 0.8–2.76)
In patients with HFrEF, high-intensity interval training is superior to moderate-intensity continuous training for improving aerobic capacity, cardiac function, and quality of life.
yang et al. (2024) conducted a meta-analysis in Heart failure with reduced ejection fraction. High-intensity interval training (HIIT) vs. Moderate-intensity continuous training (MICT) was evaluated on Peak oxygen uptake (MD 1.78, 95% CI 0.80-2.76). High-intensity interval training significantly improved peak oxygen uptake compared to moderate-intensity continuous training (MD 1.78; 95% CI 0.80-2.76) in patients with HFrEF.