Why the study?
Does high-intensity interval training improve diastolic function and cardiorespiratory fitness compared to moderate-intensity interval training in patients with HFpEF?
Population
150 patients with heart failure with preserved ejection fraction (HFpEF) from 3 RCTs
Comparison
High-intensity interval training (HIIT) vs Moderate-intensity interval training (MIIT)
Design
Meta-analysis
Key result
High-intensity interval training significantly improved diastolic function (E/A ratio) compared to moderate-intensity interval training in HFpEF patients (WMD 0.13; 95% CI 0.03-0.23; P=0.009).
Authors
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HIIT may modestly improve E/A ratio over MIIT in HFpEF without CRF gains; extends exercise evidence but leaves broader superiority open.
Meta-Analysis (n=150)
Does high-intensity interval training improve diastolic function and cardiorespiratory fitness compared to moderate-intensity interval training in patients with HFpEF?
In patients with HFpEF, HIIT may improve diastolic function (E/A ratio) more than MIIT, but does not show superiority for cardiorespiratory fitness or systolic function.
Mean Difference: 0.13 (95% CI 0.03–0.23)
p-value: p=.009
Lai et al. (2023) conducted a meta-analysis in Heart failure with preserved ejection fraction (HFpEF) (n=150). High-intensity interval training (HIIT) vs. Moderate-intensity interval training (MIIT) was evaluated on Diastolic function measured by E/A ratio (WMD 0.13, 95% CI 0.03-0.23, p=.009). High-intensity interval training significantly improved diastolic function (E/A ratio) compared to moderate-intensity interval training in HFpEF patients (WMD 0.13; 95% CI 0.03-0.23; P=0.009).