Measurement of the local aortic stiffness by a non-invasive bioelectrical impedance technique

Collette, Mathieu; Lalande, Alain; Willoteaux, S.; Lefthériotis, Georges; Humeau, Anne

doi:10.1007/s11517-011-0741-3

Cited by 7 publications

(3 citation statements)

References 29 publications

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“…To measure SV, the bioimpedance detects changes in transthoracic impedance during each cardiac cycle. The PhysioFlow has been found to be a reliable method used in calculating hemodynamic variables and AoS (24)(25)(26)(27).…”

Section: Methodsmentioning

confidence: 99%

Effects of Acute Grape Seed Extract Supplementation on Hemodynamics in Normal Body Weight and Obese Males

Dillon

Shariffi

Thompson

et al. 2020

J Nutr Sci Vitaminol

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Recently, it has been reported that dietary supplementation with grape seed extract (GSE) ameliorates endothelial function and increase nitric oxide (NO) bioavailability. Thus, we investigated if elevated blood pressure and aortic stiffness (AoS) characterized in obese individuals are attenuated following acute GSE supplementation. Twenty men (obese510; normal body weight (NBW)510) participated in this study. Systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), heart rate (HR), stroke volume (SV), cardiac output (CO), total peripheral resistance (TPR), and AoS were compared 2 h after ingestion of GSE or placebo (PL) on different days, 1 wk apart. Compared with the PL, GSE supplementation significantly decreased SBP (NBW: 10364 vs. 9963 mmHg; obese: 11863 vs. 11265 mmHg) and MAP (NBW: 7562 vs. 7262 mmHg; obese: 8663 vs. 8463 mmHg) in both groups, while there were no differences in HR, SV, DBP, TPR, and AoS. GSE supplementation significantly decreased CO in only obese group. In NBW group, TPR tended to be decreased, but there was no significant difference. Our study suggests that acute supplementation with GSE reduced both SBP and MAP via a reduction in CO in obese individuals and decreased peripheral vasoconstriction in NBW group.

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Section: Methodsmentioning

confidence: 99%

Effects of Acute Grape Seed Extract Supplementation on Hemodynamics in Normal Body Weight and Obese Males

Dillon

Shariffi

Thompson

et al. 2020

J Nutr Sci Vitaminol

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show abstract

“…Changes in transthoracic impedance via skin electrodes during the cardiac cycle were used to calculate SV. This non‐invasive device has been found to be a reliable and valid method used in measuring SV and AoS, both at rest and during exercise (Charloux et al, 2000; Collette, Lalande, Willoteaux, Leftheriotis, & Humeau, 2011). HR, SV, Q, and AoS were continuously assessed based on five second intervals from rest throughout each exercise test.…”

Section: Measurement Of Hemodynamic Variablesmentioning

confidence: 99%

Effects of chronic dietary grape seed extract supplementation on aortic stiffness and hemodynamic responses in obese/overweight males during submaximal exercise

Dillon

Shariffi

Gillum

et al. 2021

European Journal of Sport Science

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We investigated the effect of chronic grape seed extract (GSE) on blood pressure and aortic stiffness (AoS) among overweight and obese males. Systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), heart rate (HR), stroke volume (SV), cardiac output (Q), total vascular conductance (TVC), and AoS were measured during two submaximal cycling exercises (40% and 60% VO 2max ), after 7 consecutive days of GSE or placebo (PL) ingestion with one week washout period. Compared with PL, GSE supplementation significantly decreased MAP at rest (85 ± 3 mmHg vs. 82 ± 3 mmHg), 40% (102 ± 3 mmHg vs. 99 ± 3 mmHg), and 60% workloads (109 ± 3 mmHg vs. 107 ± 3 mmHg) (P = 0.001, ES = 0.2). AoS was significantly reduced (13.0 ± 1.9 AU vs. 10.2 ± 1.0 AU) at rest (P = 0.002, ES = 0.6). Q was decreased at rest and across all workloads, but there were no significant differences (7.5 ± 0.4 L/min vs. 7.1 ± 0.4 L/min; 20.4 ± 1.2 L/min vs. 19.6 ± 0.9 L/min; 26.3 ± 1.1 L/min vs. 25.5 ± 1.6 L/min, respectively). GSE had no effect on HR, TVC, and SV. Our study indicates that chronic supplementation with GSE reduces arterial pressure at rest and during exercise primarily via the substantial reduction in AoS. Thus, GSE can be a dietary supplement to treat augmented blood pressure responses in obese and overweight males at rest and during exercise.

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“…The disadvantage is that it is difficult to calibrate the changed volume. Similarly, change in vascular volume can be measured by the impedance plethysmography based on different electrical characteristics of tissue [ 19 , 20 ]. In the tonometry [ 21 ], the interaction between the peripheral artery and the water chamber of the tonometer, represented the change of arterial volume.…”

Section: Introductionmentioning

confidence: 99%

A vibration-based approach to quantifying the dynamic elastance of the superficial arterial wall

Wang

Liu

et al. 2016

BioMed Eng OnLine

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BackgroundThe purpose of this study is to propose a novel method for assessing dynamic elastance of the superficial arterial wall using the sinusoidal minute vibration method.MethodsA sinusoidal signal was used to drive a vibrator which induced a displacement of 0.15 mm with a frequency range between 40 and 85 Hz. The vibrator closely contacted with the wall of a superficial radial artery, and caused the arterial wall to shift simultaneously. A force sensor attached to the tip of the vibrator was used to pick up the reactive force exerted by the radial arterial wall. According to the Voigt and Maxwell models, a linear relationship was found between the maximum reactive force and the squared angular frequency of the vibration. The intercept of the linear function represents the arterial wall elastance. In order to validate the feasibility of our method, twenty-nine healthy subjects were recruited and the wall elastances of their radial arteries were measured at room temperature (25 °C), after a 5-min cold stress (4 °C) and a 5-min hot stress (42 °C), respectively.ResultsAfter the 5-min cold stimulation, the maximum radial wall elastance significantly increased from 0.441 ± 0.182 × 106 dyne/cm to 0.611 ± 0.251 × 106 dyne/cm (p = 0.001). In the 5-min hot stress, the maximum radial wall elastance significantly decreased to 0.363 ± 0.106 × 106 dyne/cm (p = 0.013).ConclusionsThe sinusoidal minute vibration method proposed can be employed to obtain the quantitative elastance of a superficial artery under different thermal conditions, and to help assess the severity of arterial stiffness in conduit arteries.

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Measurement of the local aortic stiffness by a non-invasive bioelectrical impedance technique

Cited by 7 publications

References 29 publications

Effects of Acute Grape Seed Extract Supplementation on Hemodynamics in Normal Body Weight and Obese Males

Effects of Acute Grape Seed Extract Supplementation on Hemodynamics in Normal Body Weight and Obese Males

Effects of chronic dietary grape seed extract supplementation on aortic stiffness and hemodynamic responses in obese/overweight males during submaximal exercise

A vibration-based approach to quantifying the dynamic elastance of the superficial arterial wall

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