Relative roles of the sympathetic and parasympathetic systems in the 4-s exercise test
Braz. j. med. biol. res
; 23(12): 1259-62, 1990. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-103653
Biblioteca responsável:
BR1.1
ABSTRACT
To evaluate the relative influence of the two branches of the autonomic nervous nervous system on the 4-s exercise test which measures heart rat acceleration at the onset of exercise, 6 healthy male subjects performed the 4-s test under sympathetic blockade with propranolol, parasympathetic blockade with atropine and dual blockade. The magnitude of the 4-s test results (meams ñ SD) was significantly different only between the conditions with and without atropine (1.04 ñ 0.03 vs 1.53 ñ 0.33, respectively), with no differences between the control (1.60 ñ 0.25) and the test under sympathetic blockade (1.51 ñ 0.33). These results support the conclusion that the 4-s exercise test is a specific method for the evaluation of parasympathetic activity
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Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Propranolol
/
Atropina
/
Teste de Esforço
Limite:
Adulto
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Braz. j. med. biol. res
Assunto da revista:
Biologia
/
Medicina
Ano de publicação:
1990
Tipo de documento:
Artigo
/
Congresso e conferência