Common Carotid Artery Diameter, Blood Flow Velocity and Wave Intensity Responses at Rest and during Exercise in Young Healthy Humans: A Reproducibility Study

Pomella, Nicola, Wilhelm, Eurico N., Kolyva, Christina, González-Alonso, José, Rakobowchuk, Mark and Khir, Ashraf W. (2017) Common Carotid Artery Diameter, Blood Flow Velocity and Wave Intensity Responses at Rest and during Exercise in Young Healthy Humans: A Reproducibility Study. Ultrasound in Medicine & Biology, 43 (5). pp. 943-957. ISSN 0301-5629

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Official URL: https://doi.org/10.1016/j.ultrasmedbio.2016.12.018

Abstract

The aim of this study was to assess the reproducibility of non-invasive, ultrasound-derived wave intensity (WI) in humans at the common carotid artery. Common carotid artery diameter and blood velocity of 12 healthy young participants were recorded at rest and during mild cycling, to assess peak diameter, change in diameter, peak velocity, change in velocity, time derivatives, non-invasive wave speed and WI. Diameter, velocity and WI parameters were fairly reproducible. Diameter variables exhibited higher reproducibility than corresponding velocity variables (intra-class correlation coefficient [ICC] = 0.79 vs. 0.73) and lower dispersion (coefficient of variation [CV] = 5% vs. 9%). Wave speed had fair reproducibility (ICC = 0.6, CV = 16%). WI energy variables exhibited higher reproducibility than corresponding peaks (ICC = 0.78 vs. 0.74) and lower dispersion (CV = 16% vs. 18%). The majority of variables had higher ICCs and lower CVs during exercise. We conclude that non-invasive WI analysis is reliable both at rest and during exercise.

Item Type: Article
Uncontrolled Keywords: Adult, Blood Flow Velocity/physiology, Carotid Artery, Common/anatomy & histology, Exercise/physiology, Female, Humans, Male, Reference Values, Reproducibility of Results, Rest, Ultrasonography/methods
Subjects: B100 Anatomy, Physiology and Pathology
C600 Sports Science
Department: Faculties > Health and Life Sciences > Sport, Exercise and Rehabilitation
Depositing User: Rachel Branson
Date Deposited: 13 Mar 2020 15:46
Last Modified: 13 Mar 2020 16:00
URI: http://nrl.northumbria.ac.uk/id/eprint/42484

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