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Hemodynamic responses to an isometric handgrip training protocol.
MedLine Citation:
PMID:  22011802     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: In the past, isometric exercises were proscribed for heart disease. However, recent evidence suggests that an isometric handgrip training (IHT) protocol - four sets of two minutes at 30% of maximum strength - produces favorable effects on the autonomic modulation and reduces resting systolic (SBP) and diastolic (DBP) blood pressure. OBJECTIVE: Aiming at obtaining support for broad clinical applicability, we quantified the main hemodynamic responses during an IHT session in patients from a supervised physical exercise program. METHODS: Forty-one patients (36 men) underwent the IHT with measurements of heart rate (HR) and BP before, during each of the two series performed with the left arm and one minute after completion. Measurements were obtained by an electrocardiogram signal in a digital Tango + oscillometric tensiometer, previously validated for physical exercise conditions. RESULTS: The IHT was appropriately carried out, with no clinical adverse reactions. There was a small increase in SBP and DBP levels, respectively, of 16 and 7 mmHg (p <0.05) and an even smaller increase in HR - 3 bpm - (p <0.05) when we compared the data obtained at 80 seconds of the last series with the pre-exercise CONCLUSION: IHT was well tolerated by patients undergoing exercise programs, resulting in a transient and modest hemodynamic effect, without inducing rapid cardiac vagal inactivation, characteristic of dynamic and short exercises.
Authors:
Claudio Gil Soares de Araújo; Carlos Vieira Duarte; Fábio de Albuquerque Gonçalves; Hugo Baptista de Oliveira Medeiros; Flávio Areal Lemos; André Luiz Gouvêa
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-10-21
Journal Detail:
Title:  Arquivos brasileiros de cardiologia     Volume:  -     ISSN:  1678-4170     ISO Abbreviation:  -     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-10-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0421031     Medline TA:  Arq Bras Cardiol     Country:  -    
Other Details:
Languages:  ENG; POR     Pagination:  -     Citation Subset:  -    
Affiliation:
Clínica de Medicina do Exercício, Rio de Janeiro, RJ, Brasil.
Vernacular Title:
Respostas hemodinâmicas a um protocolo de treinamento isométrico de preensão manual.
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