Key result
HIIT boosts exercise capacity by ~1.5 ml/kg/min over MICT in CAD.
Why the study?
The optimal exercise prescription for coronary artery disease remains under debate.
Does high-intensity interval training improve peak oxygen uptake compared to moderate-intensity continuous training in patients with coronary artery disease?
Meta-Analysis (n=902)
Does high-intensity interval training improve peak oxygen uptake compared to moderate-intensity continuous training in patients with coronary artery disease?
High-intensity interval training is a superior alternative to moderate-intensity continuous training for improving aerobic exercise capacity in patients with coronary artery disease.
Answers are grounded in this paper and cite their sources.
Supports HIIT preference over MICT in CAD rehab programs; extends RCT evidence on aerobic capacity.
Background. The optimal exercise prescription for coronary artery disease (CAD) remains under debate. The aim of our meta-analysis is to investigate the efficacy of high-intensity interval training (HIIT) versus moderate-intensity continuous training (MICT) of coronary artery disease patients. Methods. Electronic databases were searched from their inception date until October 23, 2021, and the articles include randomized controlled trials. The mean differences and 95% confidence intervals were calculated, and heterogeneity was assessed using the I2 test. Results. The study standards were met by seventeen studies. The pooled studies included 902 patients. HIIT resulted in improvement in peak oxygen uptake (1.50 ml/kg/min, 95% confidence interval: 0.48 to 2.53, n = 853 patients, and low quality evidence) compared with MICT. There was no discernible difference between the individuals in the HIIT group and the MICT group in terms of systolic/diastolic blood pressure or peak/resting heart rate. Conclusion. This systematic review and meta-analysis reported the superiority of HIIT versus MICT in enhancing peak oxygen uptake in CAD patients.
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Li et al. (2023) conducted a meta-analysis in Coronary artery disease (CAD) (n=902). High-intensity interval training (HIIT) vs. Moderate-intensity continuous training (MICT) was evaluated on Peak oxygen uptake (VO2peak) (MD 1.50 ml/kg/min, 95% CI 0.48 to 2.53). High-intensity interval training improved exercise capacity by 1.50 ml/kg/min compared with moderate-intensity continuous training in patients with coronary artery disease.
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