Abstract | PURPOSE: We tested the hypothesis that higher-intensity interval training (HIIT) could be deployed into a standard cardiac rehabilitation (CR) setting and would result in a greater increase in cardiorespiratory fitness (ie, peak oxygen uptake, (·)VO₂) versus moderate-intensity continuous training (MCT). METHODS: Thirty-nine patients participating in a standard phase 2 CR program were randomized to HIIT or MCT; 15 patients and 13 patients in the HIIT and MCT groups, respectively, completed CR and baseline and followup cardiopulmonary exercise testing. RESULTS: No patients in either study group experienced an event that required hospitalization during or within 3 hours after exercise. The changes in resting heart rate and blood pressure at followup testing were similar for both HIIT and MCT. (·)VO₂ at ventilatory-derived anaerobic threshold increased more (P < .05) with HIIT (3.0 ± 2.8 mL·kg⁻¹·min⁻¹) versus MCT (0.7 ± 2.2 mL·kg⁻¹·min⁻¹). During followup testing, submaximal heart rate at the end of stage 2 of the exercise test was significantly lower within both the HIIT and MCT groups, with no difference noted between groups. Peak (·)VO₂ improved more after CR in patients in HIIT versus MCT (3.6 ± 3.1 mL·kg⁻¹·min⁻¹ vs 1.7 ± 1.7 mL·kg⁻¹·min⁻¹; P < .05). CONCLUSIONS: Among patients with stable coronary heart disease on evidence-based therapy, HIIT was successfully integrated into a standard CR setting and, when compared to MCT, resulted in greater improvement in peak exercise capacity and submaximal endurance.
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Authors | Steven J Keteyian, Brooks A Hibner, Kyle Bronsteen, Dennis Kerrigan, Heather A Aldred, Lisa M Reasons, Mathew A Saval, Clinton A Brawner, John R Schairer, Tracey M S Thompson, Jason Hill, Derek McCulloch, Jonathon K Ehrman |
Journal | Journal of cardiopulmonary rehabilitation and prevention
(J Cardiopulm Rehabil Prev)
2014 Mar-Apr
Vol. 34
Issue 2
Pg. 98-105
ISSN: 1932-751X [Electronic] United States |
PMID | 24531203
(Publication Type: Journal Article, Randomized Controlled Trial)
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Topics |
- Blood Pressure
(physiology)
- Coronary Artery Bypass
(rehabilitation)
- Exercise Test
- Exercise Therapy
(methods)
- Female
- Heart Rate
(physiology)
- Humans
- Male
- Middle Aged
- Myocardial Infarction
(rehabilitation)
- Oxygen Consumption
(physiology)
- Percutaneous Coronary Intervention
(rehabilitation)
- Physical Exertion
(physiology)
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