What does this research mean for the field?

In patients with coronary artery disease, high-intensity interval training yields greater short-term improvements in cardiorespiratory fitness than moderate-intensity continuous training, but both modalities demonstrate similar long-term efficacy, safety, and adherence. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

September 2, 2020JAMA CardiologyOpen Access

Short-term and Long-term Feasibility, Safety, and Efficacy of High-Intensity Interval Training in Cardiac Rehabilitation

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Why the study?

HIIT improves cardiorespiratory fitness in CAD, but its feasibility, safety, and long-term effects in this population remain unclear.

Does high-intensity interval training improve VO2 peak compared to moderate-intensity continuous training in patients with coronary artery disease?

Structured PICO

Does high-intensity interval training improve VO2 peak compared to moderate-intensity continuous training in patients with coronary artery disease?

Population

93 participants with angiographically proven coronary artery disease (CAD) aged 18 to 80 years, medically cleared following a cardiopulmonary exercise test, mean age 65, 84% male.

Intervention

High-intensity interval training (HIIT) program (4 × 4-minute). 3 sessions per week (2 supervised and 1 home-based session) for 4 weeks, and 3 home-based sessions per week thereafter for 48 weeks.

Comparator

Moderate-intensity continuous training (MICT) program (40-minute, usual care). 3 sessions per week (2 supervised and 1 home-based session) for 4 weeks, and 3 home-based sessions per week thereafter for 48 weeks.

Outcome

Change in VO2 peak during the cardiopulmonary exercise test from baseline to 4 weeks.surrogate

A 4-week HIIT program is safe, feasible, and provides superior short-term improvements in cardiorespiratory fitness compared to MICT in patients with CAD, though long-term benefits are similar due to low adherence to home-based training.

Discussion

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Implication

HIIT may be prioritized over MICT for rapid VO2 peak gains in CAD rehabilitation; extends RCT evidence favoring high-intensity protocols.

Cite This Study

Taylor et al. (2020) studied this question.

synapsesocial.com/papers/6a0baa244f6759c6fca2571c https://doi.org/10.1001/jamacardio.2020.3511

Topics

Coronary artery disease

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Short-term and Long-term Feasibility, Safety, and Efficacy of High-Intensity Interval Training in Cardiac Rehabilitation

Structured PICO

Discussion

Implication

Cite This Study

Topics

Short-term and Long-term Feasibility, Safety, and Efficacy of High-Intensity Interval Training in Cardiac Rehabilitation

Structured PICO

Discussion

Implication

Cite This Study

Also Consider

Topics

Also Consider