Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"skin blood flow"”.
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Examining the roles of core and local temperature on forearm skin blood flow
… between local and reflexive control of skin blood flow (SkBF) is unclear. This thesis isolated the roles of rectal (Tre) and local (Tloc) temperature on forearm SkBF regulation at normal and elevated body temperatures, and to investigate the interaction between local and reflexive SkBF …
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The Contribution of Nitric Oxide to the Skin Blood Flow Response to Exercise in Boys and Men
… adults. However, little is known about their skin blood flow (SkBF) response. We investigated child-adult differences in SkBF during exercise (30 min at 60% VO2max) and local heating (44℃) in 12 boys (9.71.2 y) and 12 men (22.22.0 y) using laser-Doppler flowmetry and L-NAME to inhibit nitric …
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Infrared thermography (IRT) for the assessment of microvascular skin blood flow in a specialist connective tissue disease unit
… incorporating photography, IRT and laser Doppler flowmetry (LDF) for LS assessment, and the normal range of temperature and LD blood flow across several body sites was established in adults and children. The utility of the protocol for assessing LS activity in children was investigated. To develop …
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Effect of Passive Vibration on Skin Blood Flow in Good Glycemic Control and Poor Glycemic Control Type 2 Diabetics
… vibration (PV) was effective in increasing skin blood flow (SBF) in healthy individuals as well as in good to fair glycemic control T2D. There has been no study performed to examine the effect of PV on (SBF), skin temperature (ST) and blood pressure (BP) in good glycemic control (GG) control …
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The Contribution of Body Morphology to Individual Variability in the Thermoregulatory Responses to Exercise, and the Effect of Altered Skin Blood Flow on Heat Loss Potential
… responses to exercise, and the influence of skin blood flow on heat loss potential during severe heat stress. Study 1 investigated whether unbiased comparisons of changes in rectal temperature (ΔTre) should be compared at a fixed absolute rate of heat production (Hprod; W) or a fixed Hprod …
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Physiological Effects of Vibration in Select Populations
… Vibration results in significant increases in skin blood flow. No study has determined if there is an optimal frequency or duration for optimizing this response. In addition, there is no known mechanism for the increase in skin blood flow. It is hypothesized that nitric oxide (NO) is …
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Haemodynamic responses to heat stress and hypohydration in resting and exercising humans: Implications for the regulation of skeletal muscle blood flow
… these alterations their effects on muscle blood flow are not well understood. The present thesis examined whether whole body and local heat stresses increased limb skin and muscle blood flow (Study 1) and whether hypohydration and hyperthermia compromised leg muscle, skin and systemic …
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Diabetes: The Interrelationship between Vascular, Nervous Systems and Avandia
… volume plesythmography to assess post occlusion blood flow in the subject’s forearm did assessment of vascular endothelial function. Evaluating skin blood flow, orthostatic tolerance, heart rate, and thermal responses under thermal and postural stress did assessment of the autonomic nervous …
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Adenosine receptors in cutaneous thermal hyperemia and active vasodilation in humans
… the cutaneous vasodilation response to local skin heating and whole body heating in humans remain unresolved. Although nitric oxide (NO) is known to contribute to these responses, it remains unclear as to the source of NO. Adenosine receptors induce vasodilation in many human tissues and may …
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Astronaut Extravehicular Activity : safety, injury & countermeasures; &, Orbital collisions & space debris : incidence, impact & international policy
… testing was conducted to characterize skin blood flow and contact pressure inside the glove. This was done as part of NASA's effort to evaluate a hypothesis that fingernail delamination is caused by decreasing blood flow in the finger tips due to compression of the skin inside the …
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Dietary nitrate supplementation augments nitric oxide synthase-dependent and independent reflex cutaneous vasodilation in healthy humans
… 54mM SNP and local heating to 43°C. Skin blood flow was measured via laser-Doppler flowmetry and mean arterial pressure determined; cutaneous vascular conductance (CVC) was calculated and expressed as %CVCmax. Subjects underwent heat stress pre- and post-nitrate supplementation (3 …
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Regional differences in the control of the cutaneous circulation in humans
… this series of studies was to compare regional skin blood flow (SkBF) in adult humans. Forearm and calf skin sites were instrumented with microdialysis fibers, local skin heaters, and laser-Doppler probes in nine healthy volunteers. Baseline cutaneous vascular conductance (CVC) (laser-Doppler …
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Peripheral blood flow changes in response to post-exercise cold water immersion
… of cooling in the core body, muscle and skin. Given the role of blood flow in convective heat flux, substrate delivery and metabolic waste clearance, it is important to understand the influence of different water temperatures on compartmental distribution of limb blood flow during CWI. …
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Full Field Laser Perfusion Imaging and Post Occlusive Reactive Hyperaemia in the Skin Microcirculation: A Biomarker of Cardiovascular Disease Risk?
… device which can measure dynamic changes in blood flow of the skin microcirculation. Endothelial dysfunction is the earliest detectable functional indicator of cardiovascular disease (CVD), contributing to the development of atherosclerosis. Assessment of endothelial function provides a …
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Influence of upper limb ischaemia-reperfusion injury on the regulation of cutaneous blood flow during local thermal hyperaemia
… kinetics of the vasodilatory response to local skin heating. Study 1 investigated between-day reliability of the local heating response in non-glabrous and glabrous index finger skin. Study 2 investigated the effects of I-R on the local heating response in non-glabrous and glabrous skin of the …
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Thermoregulation during soccer specific intermittent exercise : the effects of clothing and environment.
… create a microenvironment at the surface of the skin. The aim of this thesis was to determine the thermoregulatory response to soccer-specific intermittent exercise during different conditions of clothing and environment. The thermal and physiological responses of the feet to continuous and …
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Assessment of the Impact of Loading Pressure on Endothelial Function in Diabetic Foot
… on endothelial function of the superficial skin blood vessels on both aspects of the foot in subjects with Type 2 diabetes mellitus in comparison to a group of control without diabetes.<b><br/></b><b><br/></b><b>Methods</b>: In-shoe pressure experienced on dorsal and plantar surfaces of the …
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The impact of exercise and thermal training interventions on thermoregulatory and cardiovascular function in young and post-menopausal females
… artery endothelial function was assessed using flow-mediated dilation (FMD). Participants underwent a passive heat stress in a water-perfused suit (~48ºC) to obtain core temperature thresholds and sensitivities for cutaneous vascular conductance (CVC) and sweat rate at two sites (chest and …
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Effects of Tea on Peripheral and Cerebral Micro- and Macrovascular Function in Humans
… and maximal thermally stimulated forearm skin responses were examined simultaneously at four sites on the dominant forearm using laser Doppler flowmetry (LDF). The following heating protocols were adopted: 1. Rapid 39°C (0.5°C/5-s), 2. Rapid 42°C (0.5°C/5-s) 3. Gradual 42°C (0.5°C/2-min …