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Matched dose interval and continuous exercise training induce similar cardiorespiratory and metabolic adaptations in patients with heart failure.
MedLine Citation:
PMID:  22769574     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: The best format of exercise training in patients with chronic heart failure (CHF) is controversial. We tested the hypothesis that aerobic continuous training (ACT) and aerobic interval training (AIT) induce similar effects on functional capacity, central hemodynamics and metabolic profile in patients with postinfarction CHF provided that the training load is equated by an individually-tailored volume/intensity dose of exercise. METHODS: Twenty patients with postinfarction CHF under optimal medical treatment were randomized to ACT or AIT for 12weeks. Exercise training consisted in individualized loads prescribed according to the Training Impulses (TRIMP(i)) method, which was determined using the individual HR and lactate profiling obtained during a treadmill test at baseline. RESULTS: Peak VO(2) increased significantly by 22% with both ACT and AIT, without differences between the two training programs. Changes in anaerobic threshold and VE/VCO(2) slope were not significantly different between ACT and AIT. Resting HR significantly decreased with both exercise modes. Resting cardiac output and stroke volume, left ventricular diastolic dimension and ejection fraction did not change from baseline with both exercise modes. Lipid profile and glucose metabolism were not substantially altered by ACT and AIT. CONCLUSIONS: ACT and AIT both induce significant improvement in aerobic capacity in patients with postinfarction CHF, without significant differences between the two training modes, provided that patients are trained at the same, individually tailored, dose of exercise. The TRIMPi method might represent a step forward in the individualization of an aerobic training tailored to the patient's clinical and functional status within cardiac rehabilitation programs.
Authors:
Ferdinando Iellamo; Vincenzo Manzi; Giuseppe Caminiti; Cristiana Vitale; Carlo Castagna; Michele Massaro; Alessio Franchini; Giuseppe Rosano; Maurizio Volterrani
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-4
Journal Detail:
Title:  International journal of cardiology     Volume:  -     ISSN:  1874-1754     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8200291     Medline TA:  Int J Cardiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.
Affiliation:
Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Pisana, Rome, Italy; Dipartimento di Medicina Interna, Università Tor Vergata, Rome, Italy.
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