Assessment of Endothelial Function Using Ultrasound

Stoner, Lee; Sabatier, Manning J.

doi:10.5772/31392

Cited by 6 publications

(7 citation statements)

References 120 publications

(132 reference statements)

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“…Images were measured offline using semi-automated edgedetection software custom written to interface with the LabVIEW data acquisition platform (version 8.1, National Instruments, Austin, Texas) (Sabatier, Stoner, Reifenberger, & McCully, 2006;Stoner et al, 2006). Custom written Excel Visual Basic code was used to fit peaks and troughs to the diameter waveforms in order to calculate diastolic, systolic, and mean diameters (Stoner & Sabatier, 2012a). Mean diameters were used for analysis.…”

Section: Diameter Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Forearm oxygenation and blood flow kinetics during a sustained contraction in multiple ability groups of rock climbers

Fryer¹,

Stoner

Scarrott

et al. 2014

Journal of Sports Sciences

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DisclaimerThe University of Gloucestershire has obtained warranties from all depositors as to their title in the material deposited and as to their right to deposit such material.The University of Gloucestershire makes no representation or warranties of commercial utility, title, or fitness for a particular purpose or any other warranty, express or implied in respect of any material deposited.The University of Gloucestershire makes no representation that the use of the materials will not infringe any patent, copyright, trademark or other property or proprietary rights.The University of Gloucestershire accepts no liability for any infringement of intellectual property rights in any material deposited but will remove such material from public view pending investigation in the event of an allegation of any such infringement. O2%·s-1 respectively). Furthermore, elite climbers de-oxygenated the flexor carpi radialis significantly (p< 0.05) more, and at a greater rate than the intermediate group (36.5 vs. 14.6%O2 and 0.43 vs. 0.1O2%·s -1 respectively). However, there were no significant differences in total forearm ∆ blood flow. An increased MVC/N is not associated with greater blood flow occlusion in elite climbers therefore, oxidative capacity may be more important for governing performance.

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Section: Diameter Measurementsmentioning

confidence: 99%

“…Semi-automated software custom written to interface with MatLab calculated time averaged maximum blood velocities across the cardiac cycle. Time averaged maximum blood velocities are more reliable than time averaged mean blood velocities (Stoner & Sabatier, 2012a, 2012b). …”

Section: Velocitiesmentioning

confidence: 99%

Forearm oxygenation and blood flow kinetics during a sustained contraction in multiple ability groups of rock climbers

Fryer¹,

Stoner

Scarrott

et al. 2014

Journal of Sports Sciences

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“…The flow-mediated dilation (FMD) test is the standard tool used to assess endothelial function 6,7) . Reduced FMD is an early marker of atherosclerosis 6) , has been noted for its capacity to predict future CVD events [8][9][10][11] , and an impaired vascular response has also been demonstrated in children as young as 7 years old with familial hypercholesterolemia 12) .…”

Section: Introductionmentioning

confidence: 99%

Use of Ultrasound for Non-Invasive Assessment of Flow-Mediated Dilation

Stoner

Sabatier

2012

JAT

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The pathological complications of atherosclerosis, namely heart attacks and strokes, remain the leading cause of mortality in the Western world. Preceding atherosclerosis is endothelial dysfunction. There is therefore interest in the application of non-invasive clinical tools to assess endothelial function. The flow-mediated dilation (FMD) test is the standard tool used to assess endothelial function. Reduced FMD is an early marker of atherosclerosis and has been noted for its capacity to predict future cardiovascular disease events. This review discusses the measurement of endothelial function using ultrasound, with a focus on the FMD technique.

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“…Brachial artery blood velocities and diameter were measured using a Terason T3300 (Burlington, MA, USA) equipped with a 16-5MHz linear array transducer (16L5 SmartMark, Terason, Burlington, MA, USA). Standard operating procedures for blood flow measurements were followed (Stoner & Sabatier, 2012). The blood vessel was clearly extended across the entire (un-zoomed) imaging plane to minimize the risk of skewing the vessel walls.…”

Section: Blood Flowmentioning

confidence: 99%

“…Offline automated edge-detection software (Quipu, Pisa Italy) was used to identify changes in diameter and velocity waveforms over the cardiac cycle. Blood flow was calculated as the product of brachial artery cross-sectional area and the time averaged maximum blood velocity (Stoner & Sabatier, 2012). During recovery, a 30s video was recorded using LiteCam HD (New Jersey, USA) and blood flow measures started 15s after the end of the last contraction as it can take up to 15s to secure a reliable and stable video of the brachial artery following exhaustive exercise.…”

Section: Blood Flowmentioning

confidence: 99%

New Zealand Blackcurrant Extract Enhances Muscle Oxygenation During Forearm Exercise in Intermediate-Level Rock Climbers

Fryer

Paterson

Perkins

et al. 2020

International Journal of Sport Nutrition and Exercise Metabolism

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The delivery to and utilization of oxygenated hemoglobin to the forearm muscles are key determinants of rock-climbing performance. Anthocyanin-rich New Zealand blackcurrant (NZBC) has been suggested to improve blood flow and may enhance forearm endurance performance. As such, a double-blind, randomized crossover design study with 12 participants performed submaximal intermittent contractions (at 40% maximal voluntary contraction) to failure after a 7-day intake of 600 mg/day NZBC extract or placebo. Minimum tissue saturation index (TSI%) was assessed during the contractions. During recovery, time to half recovery of TSI% and brachial artery blood flow were assessed. There was no difference in time to exhaustion between NZBC and placebo. Minimum TSI% was lower with NZBC extract (43 ± 8 vs. 50 ± 11 TSI%; p = .007; Cohen’s d = 1.01). During recovery, there was no effect on brachial artery blood flow. However, time to half recovery was faster with NZBC (26 ± 17 vs. 42 ± 26 s; p = .001; Cohen’s d = 1.3) following exhaustive contractions. Seven days of NZBC extract appears to improve muscle oxygenation during and following contractions with no change in either arterial blood flow or forearm endurance performance.

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Assessment of Endothelial Function Using Ultrasound

Cited by 6 publications

References 120 publications

Forearm oxygenation and blood flow kinetics during a sustained contraction in multiple ability groups of rock climbers

Forearm oxygenation and blood flow kinetics during a sustained contraction in multiple ability groups of rock climbers

Use of Ultrasound for Non-Invasive Assessment of Flow-Mediated Dilation

New Zealand Blackcurrant Extract Enhances Muscle Oxygenation During Forearm Exercise in Intermediate-Level Rock Climbers

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