Document Detail

Central hemodynamic responses during acute high-intensity interval exercise and moderate continuous exercise in patients with heart failure.
MedLine Citation:
PMID:  23066737     Owner:  NLM     Status:  Publisher    
The aim of this study was to compare the acute hemodynamic responses during high-intensity intermittent exercise (HIIE) session compared with moderate-intensity continuous exercise (MICE) session in patients with heart failure and reduced ejection fraction (HFREF). Thirteen patients with HFREF (age, 59 ± 6 years; left ventricular ejection fraction, 27% ± 6%; New York Heart Association class I to III) were randomly assigned to a single session of HIIE (2 × 8 min) corresponding to 30 s at 100% of peak power output (PPO) and 30 s passive recovery intervals or to a MICE (22 min) at 60% of PPO. Gas exchange and central hemodynamic parameters (cardiac bioimpedance) were measured continuously during exercise. Oxygen uptake, stroke volume (SV), cardiac output (CO), and arteriovenous difference (C(a-v)O(2)) were compared. Mean oxygen uptake and ventilation were lower during HIIE vs. MICE. CO, SV, and C(a-v)O(2)) were not different between MICE and HIIE. Optimized HIIE was well tolerated (similar perceived exertion) and no significant ventricular arrhythmias and (or) abnormal blood pressure responses occurred during HIEE session. Compared with MICE, optimized HIIE elicited similar central hemodynamic and C(a-v)O(2) responses in HFREF patients with lower oxygen uptake and ventilation. HIIE may be an efficient exercise training modality in patients with HFREF.
Mathieu Gayda; Eve Normandin; Philippe Meyer; Martin Juneau; Mark Haykowsky; Anil Nigam
Related Documents :
24487087 - Effects of an interatrial shunt on rest and exercise hemodynamics: results of a compute...
10562597 - Cerebral metabolic response to submaximal exercise.
8328387 - Beneficial effects of a serine protease inhibitor in peripheral vascular disease.
12388157 - Similar carbohydrate but enhanced lactate utilization during exercise after 9 wk of acc...
8357337 - Myocardial perfusion dependent and independent mechanisms of regional myocardial dysfun...
21861927 - Hypothalamic inflammation is reversed by endurance training in anorectic-cachectic rats.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-15
Journal Detail:
Title:  Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme     Volume:  -     ISSN:  1715-5312     ISO Abbreviation:  Appl Physiol Nutr Metab     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101264333     Medline TA:  Appl Physiol Nutr Metab     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
a Cardiovascular Rehabilitation and Prevention Centre (ÉPIC), Montreal Heart Institute, Université de Montréal, 5055 St-Zotique Street East, Montreal, QC H1T 1N6, Canada.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Economic Analysis of HPAI Control in the Netherlands I: Epidemiological Modelling to Support Economi...
Next Document:  Antibodies anti-CagA cross-react with trophoblast cells: a risk factor for pre-eclampsia?