The effects of high-intensity interval training and moderate-intensity continuous training on patients underwent
Fatemeh Chichagi1,2, Reyhaneh Alikhani2, Mohammad Hossein Hosseini3
1Cardiac Primary Prevention Research Center, Tehran Heart Center, Tehran University of Medical Sciences Tehran, Iran.
Insights
High-intensity interval training (HIIT) may offer superior benefits for cardiac rehabilitation after Coronary Artery Bypass Graft (CABG) surgery compared to moderate-intensity continuous training (MICT). HIIT improves exercise capacity and cardiovascular markers.
Area of Science:
- Cardiology
- Exercise Physiology
- Rehabilitation Medicine
Background:
- Coronary Artery Bypass Graft (CABG) surgery is a common procedure, yet optimal cardiac rehabilitation strategies remain debated.
- High-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) are prevalent rehabilitation modalities.
Purpose of the Study:
- To systematically review and compare the effects of HIIT versus MICT on cardiopulmonary variables in patients post-CABG.
- To evaluate the efficacy of different cardiac rehabilitation approaches for improving patient outcomes.
Main Methods:
- Systematic literature search across major scientific databases (PubMed, Web of Science, Embase, Scopus, Google Scholar).
- Inclusion of four randomized clinical trials (RCTs) involving 143 participants who underwent CABG.
- Assessment of study bias using the Cochrane Risk of Bias Tool (RoB2).
Main Results:
- HIIT interventions demonstrated potential improvements in functional capacity and heart rate variability.
- HIIT was associated with better blood pressure management and reduced levels of natriuretic peptides (BNP and NT-proBNP).
- All included trials involved participants completing at least four weeks of either HIIT or MICT.
Conclusions:
- Supervised high-intensity exercise regimens appear more beneficial for post-CABG patients.
- HIIT therapy positively impacts exercise capacity, autonomic nervous system function, and hemodynamic regulation.
- HIIT shows promise in enhancing recovery and cardiovascular health following CABG surgery.
Objectives:
To our knowledge, there is no clear consensus on a definitive cardiac rehabilitation method for patients undergoing Coronary Artery Bypass Graft (CABG). We conducted this systematic review to compare and evaluate the effects of two of the most frequent cardiac rehabilitation modalities, high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT), on cardiopulmonary variables.
Methods:
We carried out a systematic search of the databases PubMed, Web of Science, Embase, Scopus, and Google Scholar. Following the removal of duplicate results, the original search yielded 385 citations. We identified four randomized clinical trials after reviewing titles, abstracts, and potential full-text studies. We utilized the Cochrane Risk of Bias Tool (RoB2) to assess the risk of bias.
Results:
We included four randomized clinical trials involving 143 people. All trials included individuals who had CABG and completed HIIT or MICT sessions for at least four weeks. The findings indicated that HIIT programs may improve functional capacity, heart rate variability indices, and blood pressure management while lowering brain natriuretic peptide (BNP1-32) and N-terminal pro-b-type natriuretic peptide (NT-proBNP1-76) levels.
Conclusion:
Given the findings, it appeared that supervised high-intensity exercise regimens could be more useful to patients. Following the surgery, HIIT therapy improves exercise capacity, the autonomic nervous system, volume overload, and blood pressure regulation.
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