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Aerobic Exercise Training Improves Right- and Left Ventricular Systolic Function in Patients with COPD.
MedLine Citation:
PMID:  23272664     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Abstract Objective: The aim of this study was to investigate the effects of moderate continuous training (MCT) and high intensity aerobic interval training (AIT) on systolic ventricular function and aerobic capacity in COPD patients. Methods: Seventeen patients with COPD (64 ± 8 years, 12 men) with FEV(1) of 52.8 ± 11% of predicted, were randomly assigned to isocaloric programs of MCT at 70% of max heart rate (HR) for 47 minutes) or AIT (∼90% of max HR for 4×4 minutes) three times per week for 10 weeks. Baseline cardiac function was compared with 17 age- and sex-matched healthy individuals. Peak oxygen uptake (VO(2-peak)) and left (LV) and right ventricular (RV) function examined by echocardiography, were measured at baseline and after 10 weeks of training. Results: At baseline, the COPD patients had reduced systolic function compared to healthy controls (p < 0.05). After the training, AIT and MCT increased VO(2-peak) by 8% and 9% and work economy by 7% and 10%, respectively (all p < 0.05). LV and RV systolic function both improved (p < 0.05), with no difference between the groups after the two modes of exercise training. Stroke volume increased by 17% and 20%, LV systolic tissue Doppler velocity (S') by 18% and 17% and RV S' by 15% after AIT and MCT, respectively (p < 0.05). Conclusion: Systolic cardiac function is reduced in COPD. Both AIT and MCT improved systolic cardiac function. In contrast to other patient groups studied, higher exercise intensity does not seem to have additional effects on cardiac function or aerobic capacity in COPD patients.
Authors:
Eivind Brønstad; Erik Tjonna; Oivind Rognmo; Håvard Dalen; Alf Magne Heggli; Ulrik Wisloff; Charlotte Björk Ingul; Sigurd Steinshamn
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-28
Journal Detail:
Title:  COPD     Volume:  -     ISSN:  1541-2563     ISO Abbreviation:  COPD     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101211769     Medline TA:  COPD     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1K. G. Jebsen Center of Exercise in Medicine at Department of Circulation and Medical Imaging, Norwegian University of Science and Technology , Trondheim , Norway.
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