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Aerobic interval training versus continuous moderate exercise after coronary artery bypass surgery: a randomized study of cardiovascular effects and quality of life. 2009

Trine T Moholdt, and Brage H Amundsen, and Lene Annette Rustad, and Alexander Wahba, and Kjersti T Løvø, and Lisbeth R Gullikstad, and Anja Bye, and Eirik Skogvoll, and Ulrik Wisløff, and Stig A Slørdahl
Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway. trine.moholdt@ntnu.no

BACKGROUND Peak oxygen uptake (Vo(2peak)) strongly predicts mortality in cardiac patients. We compared the effects of aerobic interval training (AIT) versus moderate continuous training (MCT) on Vo(2peak) and quality of life after coronary artery bypass grafting (CABG). METHODS Fifty-nine CABG patients were randomized to either AIT at 90% of maximum heart rate or MCT at 70% of maximum heart rate, 5 d/wk, for 4 weeks at a rehabilitation center. Primary outcome was Vo(2peak), at baseline, after rehabilitation (4 weeks), and after 6 months of home-based exercise (6 months). RESULTS Vo(2peak) increased between baseline and 4 weeks in AIT (27.1 +/- 4.5 vs 30.4 +/- 5.5 mL.kg(-1).min(-1), P < .001) and MCT (26.2 +/- 5.2 vs 28.5 +/- 5.6 mL.kg(-1).min(-1), P < .001; group difference, not significant). Aerobic interval training increased Vo(2peak) between 4 weeks and 6 months (30.4 +/- 5.5 vs 32.2 +/- 7.0 mL.kg(-1).min(-1), P < .001), with no significant change in MCT (28.5 +/- 5.6 vs 29.5 +/- 5.7 mL.kg(-1).min(-1)). Quality of life improved in both groups from baseline to 4 weeks, remaining improved at 6 months. There were no changes in echocardiographic systolic and diastolic left ventricular function. Adiponectin increased between 4 weeks and 6 months in both groups (group differences, not significant). CONCLUSIONS Four weeks of intense training increased Vo(2peak) significantly after both AIT and MCT. Six months later, the AIT group had a significantly higher Vo(2peak) than MCT. The results indicate that AIT and MCT increase Vo(2peak) similarly in the short term, but with better long-term effect of AIT after CABG.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011788 Quality of Life A generic concept reflecting concern with the modification and enhancement of life attributes, e.g., physical, political, moral, social environment as well as health and disease. HRQOL,Health-Related Quality Of Life,Life Quality,Health Related Quality Of Life
D002320 Cardiovascular Physiological Phenomena Processes and properties of the CARDIOVASCULAR SYSTEM as a whole or of any of its parts. Cardiovascular Physiologic Processes,Cardiovascular Physiological Processes,Cardiovascular Physiology,Cardiovascular Physiological Concepts,Cardiovascular Physiological Phenomenon,Cardiovascular Physiological Process,Physiology, Cardiovascular,Cardiovascular Physiological Concept,Cardiovascular Physiological Phenomenas,Concept, Cardiovascular Physiological,Concepts, Cardiovascular Physiological,Phenomena, Cardiovascular Physiological,Phenomenon, Cardiovascular Physiological,Physiologic Processes, Cardiovascular,Physiological Concept, Cardiovascular,Physiological Concepts, Cardiovascular,Physiological Phenomena, Cardiovascular,Physiological Phenomenon, Cardiovascular,Physiological Process, Cardiovascular,Physiological Processes, Cardiovascular,Process, Cardiovascular Physiological,Processes, Cardiovascular Physiologic,Processes, Cardiovascular Physiological
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001026 Coronary Artery Bypass Surgical therapy of ischemic coronary artery disease achieved by grafting a section of saphenous vein, internal mammary artery, or other substitute between the aorta and the obstructed coronary artery distal to the obstructive lesion. Aortocoronary Bypass,Bypass, Coronary Artery,Bypass Surgery, Coronary Artery,Coronary Artery Bypass Grafting,Coronary Artery Bypass Surgery,Aortocoronary Bypasses,Artery Bypass, Coronary,Artery Bypasses, Coronary,Bypass, Aortocoronary,Bypasses, Aortocoronary,Bypasses, Coronary Artery,Coronary Artery Bypasses
D015444 Exercise Physical activity which is usually regular and done with the intention of improving or maintaining PHYSICAL FITNESS or HEALTH. Contrast with PHYSICAL EXERTION which is concerned largely with the physiologic and metabolic response to energy expenditure. Aerobic Exercise,Exercise, Aerobic,Exercise, Isometric,Exercise, Physical,Isometric Exercise,Physical Activity,Acute Exercise,Exercise Training,Activities, Physical,Activity, Physical,Acute Exercises,Aerobic Exercises,Exercise Trainings,Exercise, Acute,Exercises,Exercises, Acute,Exercises, Aerobic,Exercises, Isometric,Exercises, Physical,Isometric Exercises,Physical Activities,Physical Exercise,Physical Exercises,Training, Exercise,Trainings, Exercise

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