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High-Intensity Interval Training Improves Peak Oxygen Uptake and Muscular Exercise Capacity in Heart Transplant Recipients.
MedLine Citation:
PMID:  22900793     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Heart transplant (HTx) recipients usually have reduced exercise capacity with reported VO(2peak) levels of 50-70% predicted value. Our hypothesis was that high-intensity interval training (HIIT) is an applicable and safe form of exercise in HTx recipients and that it would markedly improve VO(2peak.) Secondarily, we wanted to evaluate central and peripheral mechanisms behind a potential VO(2peak) increase. Forty-eight clinically stable HTx recipients >18 years old and 1-8 years after HTx underwent maximal exercise testing on a treadmill and were randomized to either exercise group (a 1-year HIIT-program) or control group (usual care). The mean ± SD age was 51 ± 16 years, 71% were male and time from HTx was 4.1 ± 2.2 years. The mean VO(2peak) difference between groups at follow-up was 3.6 [2.0, 5.2] mL/kg/min (p < 0.001). The exercise group had 89.0 ± 17.5% of predicted VO(2peak) versus 82.5 ± 20.0 in the control group (p < 0.001). There were no changes in cardiac function measured by echocardiography. We have demonstrated that a long-term, partly supervised and community-based HIIT-program is an applicable, effective and safe way to improve VO(2peak) , muscular exercise capacity and general health in HTx recipients. The results indicate that HIIT should be more frequently used among stable HTx recipients in the future.
Authors:
K Nytrøen; L A Rustad; P Aukrust; T Ueland; J Hallén; I Holm; K Rolid; T Lekva; A E Fiane; J P Amlie; S Aakhus; L Gullestad
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-17
Journal Detail:
Title:  American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons     Volume:  -     ISSN:  1600-6143     ISO Abbreviation:  Am. J. Transplant.     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100968638     Medline TA:  Am J Transplant     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© Copyright 2012 The American Society of Transplantation and the American Society of Transplant Surgeons.
Affiliation:
Department of Cardiology Research Institute of Internal Medicine, Section of Clinical Immunology and Infectious Diseases Division of Surgery and Clinical Neuroscience Department of Clinical Service Research Institute for Internal Medicine, Section of specialized Endocrinology Department of Cardiothoracic Surgery, Oslo University Hospital HF Rikshospitalet, Norway Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway Norwegian School of Sport Sciences, Oslo, Norway Faculty of Medicine, University of Oslo, Norway.
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