2. INCREASED ARTERIAL STIFFNESS FOLLOWING ACUTE RESISTANCE EXERCISE IS ASSOCIATED WITH CHANGES IN AUTONOMIC TONE

Autor: Sung Kun Cheun, Eun Sun Yoon, Kevin S. Heffernan, Sae Young Jae, Su Jin Jung
Jazyk: angličtina
Rok vydání: 2009
Předmět:
Zdroj: Artery Research, Vol 3, Iss 3 (2009)
ISSN: 1876-4401
Popis: Background: Although acute and chronic resistance exercise is associated with increases in arterial stiffness, the underlying mechanisms are not completely understood. Autonomic nervous system function is associated with arterial stiffness. Therefore, the purpose of this study was to test the hypothesis that acute resistance exercise would increase arterial stiffness and this increased arterial stiffness would be related to changes in autonomic nervous system function. Methods: Using a randomized cross over design, 14 healthy young subjects (age 20.8±2.2 yrs, BMI 23.4±1.9) completed a resistance exercise session and a sham control session (seated rest in the exercise room) on two separate days. Carotid-femoral pulse wave velocity (PWV) and aortic augmentation index (AIx) were used as indices of arterial stiffness. Heart rate variability was used to assess autonomic function. Vascular and autonomic measures were made at baseline and 20minutes after resistance exercise (8 exercises, 60% of 1 repetition maximal). Results: There were significant increases in resting heart rate (59.2±2.6 to 80.4±3.1bpm), aortic systolic blood pressure (96.6±2.4 to 102.4±2.1 mmHg), PWV (6.07±0.3 to 6.36±0.2%), and AIx@75bpm (−15.3±3.4 to −0.07±3.3%) (all p
Databáze: OpenAIRE
Externí odkaz: