Circulating catecholamines, endothelin-1, and nitric oxide releases do not explain the preserved FMD following acute resistance exercise in strength-trained men.
Eur J Appl Physiol
; 124(8): 2417-2425, 2024 Aug.
Article
em En
| MEDLINE
| ID: mdl-38536440
ABSTRACT
PURPOSE:
Acute resistance exercise decreases endothelial function in sedentary individuals but not in strength-trained (ST) individuals. However, the underlying mechanism(s) of vascular protection in ST individuals remains unclear. Herein, we compared catecholamines, endothelin-1 (ET-1), and nitric oxide (NOx) releases after acute resistance exercise between sedentary and ST individuals.METHODS:
The untrained (UT) group comprised 12 male individuals with no regular training, while the ST group comprised 12 male individuals. Participants performed a session of resistance exercise, which consisted of 3 sets of 10 repetitions at 75% of one repetition maximum. Heart rate (HR) and blood pressure were measured during resistance exercise. Brachial artery flow-mediated dilation (FMD), blood pressure, HR, and blood collection were undertaken before and 10, 30, and 60 min after the resistance exercise.RESULTS:
No significant difference was found in baseline brachial artery FMD between the groups (P > 0.05). Brachial artery FMD was significantly reduced in the UT group (P < 0.05) but it was prevented in the ST group after the resistance exercise. Significant differences were found at 10, 30, and 60 min after the resistance exercise in brachial artery ΔFMD from baseline between groups (P < 0.05). Blood pressure, HR, plasma epinephrine, norepinephrine, dopamine, serum endothelin-1, and plasma NOx responses did not differ between groups throughout the experimental period.CONCLUSION:
In conclusion, preserved endothelial function in response to acute resistance exercise in ST male individuals is independent of catecholamines, ET-1, and NOx responses.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Vasodilatação
/
Artéria Braquial
/
Catecolaminas
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Endotelina-1
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Treinamento Resistido
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Óxido Nítrico
Limite:
Adult
/
Humans
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Male
Idioma:
En
Revista:
Eur J Appl Physiol
Assunto da revista:
FISIOLOGIA
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Japão