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HEMODYNAMIC RESPONSES TO RESISTANCE EXERCISE WITH RESTRICTED BLOOD FLOW IN YOUNG AND OLDER MEN.
MedLine Citation:
PMID:  23168372     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
ABSTRACT: Exercise with blood flow restriction promotes significant improvements and has been considered an attractive exercise strategy, especially for older individuals. However, the acute cardiovascular responses to resistance exercise with blood flow restricted (BFR) are not fully known. The purpose of this study was to evaluate the hemodynamic responses during resistance exercise with BFR in young and older individuals. We compared hemodynamic responses in 15 young (30 ± 3 yr) and 12 older subjects (66 ± 7 yr) during low-intensity resistance biceps curl exercise with (BFR-RE) or without (RE) blood flow restriction, in a random and cross-over design. Heart rate (HR), mean blood pressure (MBP), calf blood flow (CBF), and calf vascular resistance (CVR) were evaluated. Groups presented similar values at baseline. Compared with RE, HR and MBP were higher during BFR-RE for both groups, and these changes were maintained during the recovery period. In both groups, BFR-RE elicited larger decreases in CBF and increased CVR. Both groups showed a significant increase in double-product during BFR-RE. In conclusion, resistance exercise with BFR elicits greater hemodynamic changes in healthy young and older men, with responses of similar magnitudes in both groups. The safety of BFR in clinical practice demands further study in vulnerable populations.
Authors:
Paulo J C Vieira; Gaspar R Chiappa; Daniel Umpierre; Ricardo Stein; Jorge P Ribeiro
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-17
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  -     ISSN:  1533-4287     ISO Abbreviation:  J Strength Cond Res     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1Exercise Pathophysiology Research Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil 2Cardiology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil 3Department of Medicine, Faculty of Medicine, Federal University of Rio Grande Sul, Porto Alegre, Brazil.
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