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Characterization of the brachial artery shear stress following walking exercise

Padilla, Jaume, Harris, Ryan, Rink, Lawrence D and Wallace, Janet P (2008) Characterization of the brachial artery shear stress following walking exercise. Vascular Medicine, 13 . pp. 105-111. [Journal article]

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URL: http://vmj.sagepub.com/content/13/2/105

DOI: 10.1177/1358863x07086671

Abstract

Habitual exercise provides repeated episodes of elevated vascular shearstress (SS), which may be a mechanism for repair of endothelial dysfunction in disease.Our aim was to determine the brachial artery SS during the 3–hour period followingsingle bouts of low, moderate, and high-intensity walking exercise. In a randomized crossover design, 14 men walked for 45 minutes on a treadmill at 25%, 50% and 75% of VO2peak separated by 2–7 days. Using Doppler ultrasonography, brachial artery SS was assessed immediately after exercise and then hourly for 3 hours. Highintensity walking elicited greater (p < 0.05) post-exercise SS compared with low and moderate intensity. In addition, a 3 × 4 (intensity × time) ANOVA indicated an absence of interaction (p = 0.369) and a decline in post-exercise SS over time (p < 0.0001) which was abolished after 2 hours. Thus, we found that brachial artery SS is greatestfollowing high-intensity walking and that the rate of decline in SS is similar across allwalking intensities.

Item Type:Journal article
Keywords:Doppler ultrasonography; endothelial function; exercise intensity
Faculties and Schools:Faculty of Life and Health Sciences > School of Sport
Faculty of Life and Health Sciences
Research Institutes and Groups:Sport and Exercise Sciences Research Institute
ID Code:28274
Deposited By: Mrs Julie Haydock
Deposited On:16 Dec 2013 13:44
Last Modified:16 Dec 2013 13:44

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