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High-intensity interval exercise in chronic heart failure: protocol optimization.
MedLine Citation:
PMID:  22300780     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
BACKGROUND: There are little data on the optimization of high-intensity aerobic interval exercise (HIIE) protocols in patients with chronic heart failure (CHF). Therefore, we compared acute cardiopulmonary responses to 4 different HIIE protocols to identify the optimal one.
METHODS AND RESULTS: Twenty men with stable systolic CHF performed 4 different randomly ordered single HIIE sessions with measurement of gas exchange. For all protocols (A, B, C, and D) exercise intensity was set at 100% of peak power output (PPO). Interval duration was 30 seconds (A and B) or 90 seconds (C and D), and recovery was passive (A and C) or active (50% of PPO in B and D). Time spent above 85% of VO(2peak) and time above the ventilatory threshold were similar across all 4 HIIE protocols. Total exercise time was significantly longer in protocols with passive recovery intervals (A: 1,651 ± 347 s; C: 1,574 ± 382 s) compared with protocols with active recovery intervals (B: 986 ± 542 s; D: 961 ± 556 s). All protocols appeared to be safe, with exercise tolerance being superior during protocol A.
CONCLUSION: Among the 4 HIIE protocols tested, protocol A with short intervals and passive recovery appeared to be superior.
Authors:
Philippe Meyer; Eve Normandin; Mathieu Gayda; Guillaume Billon; Thibaut Guiraud; Laurent Bosquet; Annick Fortier; Martin Juneau; Michel White; Anil Nigam
Publication Detail:
Type:  Journal Article     Date:  2011-11-25
Journal Detail:
Title:  Journal of cardiac failure     Volume:  18     ISSN:  1532-8414     ISO Abbreviation:  J. Card. Fail.     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-02-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9442138     Medline TA:  J Card Fail     Country:  United States    
Other Details:
Languages:  eng     Pagination:  126-33     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Inc. All rights reserved.
Affiliation:
University Hospital of Geneva, Geneva, Switzerland; Cardiovascular Prevention and Rehabilitation Centre (Centre ÉPIC), Université de Montréal, Montréal, Canada.
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