Mechanical efficiency of high versus moderate intensity aerobic exercise in coronary heart disease patients: A randomized clinical trial
| Autor: | Verónica Verónica Hernández Jiménez, Lorena Ruiz Bautista, José L. Chicharro, Alejandro Berenguel Senen, María Elvira Barrios Garrido-Lestache, Koldobika Villelabeitia-Jaureguizar, Davinia Vicente-Campos |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Male
medicine.medical_specialty High interval training Energy transfer Coronary Disease Clinical Cardiology High-Intensity Interval Training Coronary artery disease law.invention Incremental exercise Oxygen Consumption Randomized controlled trial Heart Rate law Internal medicine medicine Humans Aerobic exercise Prospective Studies Exercise Cardiopulmonary exercise test Mechanical efficiency Cardiac Rehabilitation business.industry General Medicine Middle Aged medicine.disease Coronary heart disease Exercise Therapy Intensity (physics) Cardiology Female Energy expenditure Energy Metabolism Cardiology and Cardiovascular Medicine business High-intensity interval training Follow-Up Studies |
| Zdroj: | DDFV: Repositorio Institucional de la Universidad Francisco de Vitoria Universidad Francisco de Vitoria Cardiol J DDFV. Repositorio Institucional de la Universidad Francisco de Vitoria instname |
| Popis: | Background: Mechanical efficiency (ME) refers to the ability of an individual to transfer energy consumed by external work. A decreased ME, could represent an increased energy cost during exercise and may, therefore, be limited in terms of physical activity. This study aimed to compare the influence of two different exercise protocols: moderate continuous training (MCT) versus high intensity interval training (HIIT), as part of a cardiac rehabilitation program on ME values among coronary patients. Methods: One hundred and ten coronary patients were assigned to either HIIT or MCT groups for 8 weeks. Incremental exercise tests in a cycle ergometer were performed to obtain VO2peak. Net energy expenditure (EE) and ME were obtained at intensities corresponding to the first (VT1) and second (VT2) ventilatory thresholds, and at VO2peak. Results: Both exercise programs significantly increase VO2peak with a higher increase in the HIIT group (2.96 ± 2.33 mL/kg/min vs. 3.88 ± 2.40 mL/kg/min, for patients of the MCT and HIIT groups, respectively, p < 0.001). The ME at VO2peak and VT2 only significantly increased in the HIIT group. At VT1, ME significantly increased in both groups, with a greater increase in the HIIT group (2.20 ± ± 6.25% vs. 5.52 ± 5.53%, for patients of the MCT and HIIT groups, respectively, p < 0.001). Conclusions: The application of HIIT to patients with chronic ischemic heart disease of low risk resulted in a greater improvement in VO2peak and in ME at VT1, than when MCT was applied. Moreover, only the application of HIIT brought about a significant increase in ME at VT2 and at VO2peak. (Cardiol J 2019; 26, 2: 130–137) post-print 251 KB |
| Databáze: | OpenAIRE |
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