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Showing 1 to 20 of 50 for “"Baroreflex"”.
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Assessing the Cardiovagal Baroreflex
… in systolic arterial blood pressure produce baroreflex mediated shortening and lengthening, respectively, of the R-R interval. This phenomenon, otherwise known as the cardivagal baroreflex, is best described by the sigmoid relationship between R-R interval length and systolic blood pressure. …
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Baroreflex sensitivity and developmental coordination disorder
… One indicator of cardiovascular health is baroreflex sensitivity (BRS), which is a measure of short term BP regulation that is accomplished through changes in HR. Diminished BRS is predictive of cardiovascular morbidity and mortality. The purpose of this study was to investigate BRS in 117 …
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Modulators of Baroreflex Function in Conditions Associated with Hypertension
… autonomic nervous system activity. Importantly, baroreflex sensitivity for control of heart rate, an important maker of parasympathetic function, is reduced in conditions associated with hypertension and is believed to precede and contribute to the pathogenesis of hypertension. Therefore, it is …
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Aerobic Fitness, Physical Activity, and Baroreflex Senstivity in Healthy Adolescents
… aerobic fitness, physical activity (PA), and baroreflex sensitivity (BRS) in healthy adolescents. METHODS: Spontaneous BRS was measured for 10 minutes in the supine position using a Continuous Non-Invasive Arterial Pressure Monitor (CNAP) and a 3-lead ECG. Nevrokard Software was used to …
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Gender and obesity effects on cardiovagal baroreflex gain in humans
… and body fat distribution on cardiovagal baroreflex gain were conducted to determine I) if women would demonstrate lower cardiovagal baroreflex gain compared with men; 2) if cardiovagal baroreflex gain would be reduced in overweight/obese (35>body mass index<25 kg/m2) individuals compared …
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Multidimensional Cardioception and Trait Anxiety: Potential Clues from Baroreflex Sensitivity
… in anxiety and interoception is largely unknown. Baroreflex sensitivity (BRS) has been implicated in interoceptive processes yet no known research directly measures this in relation to multidimensional cardioception. The present study aimed to assess the degree to which IS, IAC, IAW, and BRS …
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Cocaine- and Amphetamine-Regulated Transcript Peptide Attenuates Baroreflex in the Rat.
… phenylephrine every 10 min to elicit a baroreflex. CARTp (0.1- 3 nmol) by intracisternal or bilateral intra-NTS microinjection consistently attenuated the phenylephrineinduced bradycardia. In contrast, CARTp antibody potentiated the bradycardia produced from phenylephrine. Microinjection …
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Investigating the Effects of High-Intensity Interval Training on Baroreflex Sensitivity
Cardiovagal baroreflex sensitivity (cvBRS) is known to be influenced by endurance exercise. In fact, endurance exercisers typically display a greater cvBRS compared to sedentary controls. Despite the merits of endurance training, adherence to exercise is a problem for many individuals. …
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Longterm peripheral baroreflex and chemoreflex function after bilateral eversion carotid endarterectomy
… the long-term effect of the e-CEA on arterial baroreflex and peripheral chemoreflex function in humans. Methods A retrospective review was conducted on a prospectively compiled computerized database of 3128 CEAs performed on 2617 patients at our Center between January 2001 and March 2006. …
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Investigation of the baroreflex of the rat : steady state and dynamic features
The baroreflex is one of the most important feedback systems in the body to maintain blood pressure variation within the homeostatic range. In this dissertation, the important features of the carotid and aortic baroreflexes have been extensively investigated on ventilated, central nervous system …
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Arterial Baroreflex Regulation of Sympathetic Discharge During Maximal Voluntary End-Inspiratory Apnea
… blood pressure (BP) homeostasis. The arterial baroreflex represents a critical mechanism regulating sympathetic outflow during rest and physiological stress. Volitional apnea, seen in breath-hold diving, serves as a physiological stressor and a model to increase sympathetic outflow in human …
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The Baroreflex And Neurogenic Control Of Cerebral Autoregulation In Cerebral Blood Flow
… of a functional relationship between CA and the baroreflex (BR) have prompted suggestions that the baroreceptors might supply neurogenic input to the cerebral vasculature. Alternative potential inputs have also not been explored. A head up tilt (HUT) protocol offers an established way to …
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Identifying a low-order beat-to-beat model of arterial baroreflex action
The arterial baroreflex is a fast-acting control mechanism that the body relies on to regulate blood pressure. Previous efforts to quantitatively model the baroreflex have relied primarily on non-parametric characterization of the transfer function from blood pressure to heart rate (Berger et …
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Muscle Metaboreflex And Arterial Baroreflex: Action, Interaction And Altered Control In Heart Failure
… in heart failure and 3) how do the arterial baroreflex and muscle metaboreflex interact with each other when activated simultaneously in normal and heart failure animals. Using chronically instrumented canine model, data was collected before and after the induction of heart failure. We found …
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Tracking autonomic balance using open and closed loop models of the arterial baroreflex
… Accurate quantitative models of the baroreflex would provide physiological insight, and could allow for real-time tracking of ANS activity in clinical settings. Prior work has concentrated on modeling the baroreflex nonparametrically with linear transfer functions, or parametrically …
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The effects of muscle mechanoreflex stimulation via passive muscle stretch on baroreflex function in humans
… muscle mechanoreflex stimulation on the baroreflex is unknown. Therefore, this thesis investigated the effects of muscle mechanoreflex stimulation via passive calf muscle stretch on baroreflex function in humans. Firstly, spontaneous baroreflex sensitivity decreases progressively during …
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Role of the Baroreflex in Long-Term Blood Pressure Regulation in Children Born With Very Low Birth Weight
… One mechanism of short-term BP regulation is the baroreflex, which can be assessed by calculating baroreflex sensitivity (BRS). There is evidence in animals that the baroreflex may play a role in regulating BP on a long-term basis, but evidence is lacking in humans, particularly children. …
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Blood Pressure Regulation by the Endocannabinoid System in Conditions Associated with Hypertension
… imbalance in autonomic nervous system activity. Baroreflex sensitivity for control of heart rate, an important index of vagus nerve function as well as general morbidity and mortality, is often impaired in conditions associated with hypertension. Restoration of baroreflex function is now …
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