Document Detail

The addition of strength training to aerobic interval training: effects on muscle strength and body composition in CHF patients.
MedLine Citation:
PMID:  20562711     Owner:  NLM     Status:  MEDLINE    
PURPOSE: The loss of lean muscle mass and muscle strength is a common problem in chronic heart failure (CHF) patients. Endurance training is efficient in improving patient exercise capacity. This study sought to evaluate the additional effects of strength training on muscle strength and body composition in chf patients participating in an interval training program.
METHODS: Twenty consecutive, stable CHF patients participated in a rehabilitation program. Subjects were randomly assigned to aerobic (n = 10) or combined aerobic plus strength training group (n = 10). Aerobic group performed interval training on cycle ergometers. Strength training incorporated exercises for various muscle groups, including quadriceps, hamstrings, biceps brachii, and the deltoids. Both regimes were of the same duration. Body composition was evaluated by whole-body dual energy x-ray absorptiometry and quadriceps strength by the sum of the 2-repetition maximum (2-RM) test for each leg. Peak oxygen uptake (.VO(2peak)) and peak work load (W(peak)) as well as oxygen uptake (.VO(2AT)) and workload at anaerobic threshold (W(AT)) were evaluated by a symptom limited cardiopulmonary exercise testing.
RESULTS: Concerning leg lean mass, no significant within-subjects or between-groups changes were observed (P > .05). Both groups improved in 2-RM test (P < .05), while a significant difference was observed between groups (P < .05). .VO(2peak) and .VO(2AT) and W(peak) and W(AT) were equally improved between training groups (P < .05).
CONCLUSIONS: Combined aerobic interval and strength training induces a greater benefit than interval training alone on muscle strength in CHF patients. Adaptations other than hypertrophy, such as muscle fiber type alterations and/or neuromuscular adjustments, may account for these results.
Anthi Bouchla; Eleftherios Karatzanos; Stavros Dimopoulos; Athanasios Tasoulis; Varvara Agapitou; Nikolaos Diakos; Eleni Tseliou; John Terrovitis; Serafim Nanas
Publication Detail:
Type:  Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Journal of cardiopulmonary rehabilitation and prevention     Volume:  31     ISSN:  1932-751X     ISO Abbreviation:  J Cardiopulm Rehabil Prev     Publication Date:    2011 Jan-Feb
Date Detail:
Created Date:  2011-01-10     Completed Date:  2011-04-27     Revised Date:  2011-12-23    
Medline Journal Info:
Nlm Unique ID:  101291247     Medline TA:  J Cardiopulm Rehabil Prev     Country:  United States    
Other Details:
Languages:  eng     Pagination:  47-51     Citation Subset:  IM    
Pulmonary & Critical Care Medicine Department, Cardiopulmonary Exercise Testing and Rehabilitation Laboratory, Evgenidio Hospital, National Kapodistrian University of Athens, 20 Papadiamantopoulou St., Athens, Greece.
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MeSH Terms
Absorptiometry, Photon
Anaerobic Threshold
Body Composition
Chronic Disease
Exercise Test
Exercise Tolerance
Heart Failure / complications,  physiopathology,  rehabilitation*
Middle Aged
Muscle Strength
Muscle Weakness / diagnosis*,  etiology,  physiopathology,  therapy*
Muscle, Skeletal / physiopathology
Resistance Training* / methods,  organization & administration
Treatment Outcome
Erratum In:
J Cardiopulm Rehabil Prev. 2011 Nov;31(6):E1

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

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