Intra-arterial blood pressure response in hypertensive subjects during low- and high-intensity resistance exercise
Clinics
; 65(3): 271-277, 2010. tab, ilus
Artigo
em Inglês
| LILACS
| ID: lil-544019
Biblioteca responsável:
BR1.1
ABSTRACT
OBJECTIVE:
The aim of this study was to describe blood pressure responses during resistance exercise in hypertensive subjects and to determine whether an exercise protocol alters these responses.INTRODUCTION:
Resistance exercise has been recommended as a complement for aerobic exercise for hypertensive patients. However, blood pressure changes during this kind of exercise have been poorly investigated in hypertensives, despite multiple studies of normotensives demonstrating significant increases in blood pressure.METHODS:
Ten hypertensive and ten normotensive subjects performed, in random order, two different exercise protocols, composed by three sets of the knee extension exercise conducted to exhaustion 40 percent of the 1-repetition maximum (1RM) with a 45-s rest between sets, and 80 percent of 1RM with a 90-s rest between sets. Radial intra-arterial blood pressure was measured before and throughout each protocol.RESULTS:
Compared with normotensives, hypertensives displayed greater increases in systolic BP during exercise at 80 percent (+80±3 vs. +62±2 mmHg, P<0.05) and at 40 percent of 1RM (+75±3 vs. +67±3 mmHg, P<0.05). In both exercise protocols, systolic blood pressure returned to baseline during the rest periods between sets in the normotensives; however, in the hypertensives, BP remained slightly elevated at 40 percent of 1RM. During rest periods, diastolic blood pressure returned to baseline in hypertensives and dropped below baseline in normotensives.CONCLUSION:
Resistance exercise increased systolic blood pressure considerably more in hypertensives than in normotensives, and this increase was greater when lower-intensity exercise was performed to the point of exhaustion.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Pressão Sanguínea
/
Treinamento Resistido
/
Hipertensão
Tipo de estudo:
Ensaio clínico controlado
/
Estudo observacional
Limite:
Adulto
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Clinics
Assunto da revista:
Medicina
Ano de publicação:
2010
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade de São Paulo/BR