Open Access. Powered by Scholars. Published by Universities.®
Systems and Integrative Physiology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Blood Pressure (3)
- Microneurography (2)
- Acute thermal sensation (1)
- Anxiety (1)
- Aortic wave reflection (1)
-
- Arterial Stiffness (1)
- Arterial stiffness (1)
- Baroreflex (1)
- Blood pressure (1)
- COVID-19 Pandemic (1)
- Decentering (1)
- Energy Balance (1)
- Fasting (1)
- Heart Rate (1)
- Heart Rate Variability (1)
- Hypertension (1)
- Intermittent Fasting (1)
- Lower Body Negative Pressure (1)
- Mental Stress (1)
- Mental stress (1)
- Mindfulness (1)
- Muscle Sympathetic Nerve Activity (1)
- Muscle sympathetic nerve activity (1)
- Orexin (1)
- Salt-sensitive (1)
- Sympathetic Nervous System (1)
- Vasopressin (1)
- Wave Reflections (1)
Articles 1 - 7 of 7
Full-Text Articles in Systems and Integrative Physiology
The Impact Of Food Deprivation On Cardiovascular Physiology, Steven Philip Stelly
The Impact Of Food Deprivation On Cardiovascular Physiology, Steven Philip Stelly
Dissertations, Master's Theses and Master's Reports
Introduction: Despite the commonality of fasting, there still remains a lack of scientific research, specifically in regard to the impact of fasting on cardiovascular physiology. Thus, the goal of this research project was to further explore the relationship between fasting and cardiovascular physiology. Hypothesis: The hypothesis of this research project was that a 24-hr fast would likely lead to increased BP and HR, along with blood biomarker changes, and that experiencing this 24-hr fast twice a week would lead to reduced BP and HR along with altered circulating blood biomarker levels. Methods: In order to test these hypotheses, cardiovascular and …
Effects Of Mindfulness And Stress Management On Neurocardiovascular And Psychological Outcomes, Aditi P. Vyas
Effects Of Mindfulness And Stress Management On Neurocardiovascular And Psychological Outcomes, Aditi P. Vyas
Dissertations, Master's Theses and Master's Reports
There has been a higher prevalence of developing anxiety due to frequent episodes of stress among adults in recent years. Chronic anxiety can contribute to the prevalence of elevated blood pressure and hypertension. High anxiety and stress also contribute to overactivation of the sympathetic nervous system which can be quantified by increased muscle sympathetic nerve activity (MSNA). Sympathetic overactivation can lead to vasoconstriction and loss of arterial elasticity. Anxiety, MSNA, blood pressure, and arterial stiffness are all interconnected, thus studying these relationships is crucial to understand the underlying mechanisms for prevention and treatment of cardiovascular disease (CVD). Non-pharmacological and mind-body …
Short-Term Fasting And Autonomic Control, Joshua Gonzalez
Short-Term Fasting And Autonomic Control, Joshua Gonzalez
Dissertations, Master's Theses and Master's Reports
Obesity is a chronic metabolic disorder associated with increased risk of cardiovascular disease. Evidence suggests that chronic intermittent fasting improves cardiometabolic health and reduces arterial blood pressure. However, the mechanisms underlying the reductions in blood pressure and improved cardiovascular health observed from chronic fasting studies remain unclear. The autonomic nervous system has a central role in the regulation of blood pressure and is essential for cardiovascular homeostasis. We conducted a study to investigate how acute fasting influences autonomic control of blood pressure at rest and during stress. Twenty-five young, healthy, normal weight, normotensive participants were tested twice, once in the …
Sympathetic Neural Responses To Acute Thermal Sensations, Hannah August Cunningham
Sympathetic Neural Responses To Acute Thermal Sensations, Hannah August Cunningham
Dissertations, Master's Theses and Master's Reports
The influence of thermal stimuli on the sympathetic nervous system is variable and largely depends on the change in temperature and timing of the stimuli. Core temperature changes yield increased muscle sympathetic nerve activity (MSNA) while changes in skin temperature yield variable MSNA responses. The MSNA responses to acute heating or cooling sensations remains unclear. Twenty-three participants (11 women, 12 men; age 24±1 years, BMI 26±1 kg/m2) underwent a thermal protocol that included four trials each of cool sensation threshold, warm sensation threshold, and heat pain (12 total trials). Continuous blood pressure (finger plethysmography), heart rate (electrocardiography), and …
Mindfulness, Aortic Wave Reflection, And Arterial Stiffness, Sarah Lewallen
Mindfulness, Aortic Wave Reflection, And Arterial Stiffness, Sarah Lewallen
Dissertations, Master's Theses and Master's Reports
Cardiovascular disease and hypertension are leading causes of death worldwide. The mitigation of high blood pressure is essential in decreasing the prevalence of cardiovascular-related deaths worldwide. Stress and anxiety are known to play a role in augmenting blood pressure in individuals of all ages. This increase in pressure can result in premature stiffening of large arteries in systemic circulation. Mindfulness is an ancient, non-secular practice which aids in stress reduction. Decentering, an aspect of mindfulness, involves accepting thoughts as transient rather than permanent associations. The purpose of this project was to examine the relationship between cardiovascular health and mindfulness practices. …
Acute Physiological Responses To Arm-Cranking With Blood Flow Restriction, Benjamin Cockfield
Acute Physiological Responses To Arm-Cranking With Blood Flow Restriction, Benjamin Cockfield
Dissertations, Master's Theses and Master's Reports
Physiological responses to aerobic blood flow restriction exercise (BFR) are well documented for lower-body exercise but not upper-body exercise. I evaluated cardiorespiratory (heart rate, VO2, RER, ventilation), metabolic (tissue saturation, deoxyhemoglobin concentrations), and perceptual (effort, pain) responses to arm cranking with BFR at varying arterial occlusion pressures (AOP). Ten adults performed 4 intermittent arm cranking protocols (6x2-min, 1-min recovery): 1) low load (LL) – 40%VO2peak and 0% AOP; high load (HL) – 80%VO2peak and 0% AOP; (BFR50) – 40%VO2peak with 50% AOP; (BFR70) – 40%VO2peak with 70% AOP. Heart rate, RER, and ventilation, were higher with BFR compared to LL …
The Orexin System In Doca-Salt Hypertension: Regulation Of Vasopressin, Jeremy Bigalke
The Orexin System In Doca-Salt Hypertension: Regulation Of Vasopressin, Jeremy Bigalke
Dissertations, Master's Theses and Master's Reports
Orexin is a neuropeptide with a large range of functions, with a recently discovered role in blood pressure (BP) regulation. Although the role of brain orexin system in hypertension has been investigated in several hypertensive animals, it remains unclear whether activation of the orexin system contributes to the development of Deoxycorticosterone-acetate (DOCA) hypertension, an animal model of human salt sensitive hypertension. In this study, we investigated the hypothesis that Orexin-1 receptor (OX1R) expression is increased in the paraventricular nucleus (PVN), a critical brain area controlling cardiovascular function, which subsequently increases vasopressin (AVP) expression and peripheral secretion, resulting in hypertension development …