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 20 of 44 for “"Sympathetic Activity"”.
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Examining Racial Differences in Sympathetic Activity Assessed During Recovery from Exercise in Obese Adolescent Females
Sympathetic overactivity (SO) is associated with obesity and cardiovascular disease (CVD) mortality. Black adolescents have an increased risk of obesity and CVD later in life, particularly females. PURPOSE: To evaluate differences in SO between black (BOA) and white obese female adolescents (WOA). …
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The Correlation Between the Treatment Efficacy and the Sympathetic Activity in Men With Lower Urinary Tract Symptoms
… in the treatment efficacy depending on the sympathetic activity in men with lower urinary tract symptoms (LUTS). Methods: In the current single-center, retrospective study, we evaluated a total of 66 male patients aged 40–70 years of age, pre¬senting with LUTS, whose International Prostate …
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Alpha-Blocker Treatment Response in Men with Lower Urinary Tract Symptoms Based on Sympathetic Activity : Prospective, Multicenter, Open - Labeled, Observational Study
… α-blocker between 2 groups of men, one with high sympathetic activity (HSA) and another with low sympathetic activity (LSA) or normal sympathetic activity. METHODS: A total of 159 men (≥50 years of age) with lower urinary tract symptoms resulting from benign prostatic hyperplasia were analyzed. We …
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Quantifying the Relationship of Bilateral Blood Flow in Glabrous Skin at Rest and During Sympathetic Perturbations
Sympathetic nervous system regulation of blood flow within glabrous skin occurs through control of vasoconstrictor tone, with vasodilation being a passive process. As bursts of sympathetic vasoconstrictor activity occur simultaneously at separate sites of the body, blood flow patterns should also …
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Sympathetic nervous system in the development of mild DOCA-salt hypertension
… of arterial pressure, primarily by modulating sympathetic nerve activity. Sympathetic nervous system activation contributes to the pathogenesis of human hypertension. Recent evidence points to mineralocorticoids as a cause of sympathetic overactivity in hypertension. In the studies for this …
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THE EFFECTS OF GASTRIC AND HOMEOSTATIC AUTONOMIC AFFERENT REFLEXES ON CARDIAC AUTONOMIC EFFERENT ACTIVITY IN HEALTHY HUMAN VOLUNTEERS
… reflexes on cardiovascular autonomic efferent activity are regarded as a direct neural effect of the activation of gastric receptors which send afferent inputs to the central nervous system (CNS) to cause various cardiovascular changes (Van Orshoven et al., 2004; McHugh et al., 2010; Girona et …
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The effects of tonic muscle pain on the sympathetic and somatic motor systems in humans
… increasing muscle spindle afferent firing. This activity in turn will raise the likelihood of activation in the pool of alpha-motorneurones projecting to the primary muscle increasing resting muscle tonus. Muscle spindle afferents and postganglionic sympathetic outflow to skin and muscle were …
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Resting Microvascular and Autonomic Function in Relation to Age and Sex Hormone Concentrations
… sinus arrhythmia (RSA) indicating lower parasympathetic activity and positively correlated with diastolic blood pressure (DBP) and mean arterial pressure (MAP). Estradiol positively correlated with the low frequency/high frequency ratio of HRV, indicating higher sympathetic activity, and DBP …
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Aging and Sympathetic Neurotransmission in Two Strains of Rats that Differ in Longevity and Immune Profiles
<p>Age-related changes in sympathetic neurotransmission in immune organs may be associated with immunosenescence; however no causal relationship has been established. From previous studies in Fischer rats (F344), we have found that during middle age, sympathetic nerve activity (SNA) rises in the …
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Effects of Modest Weight Gain on Blood Pressure and Sympathetic Neural Activity in Nonobese Humans
Obesity is associated with sympathetic neural activation and elevated blood pressure(1,2). However, it is unclear whether modest elevations in body weight are sufficient to induce increases sympathetic activity (3). Furthermore, there is a large amount of individual variability in the blood …
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The measurement of vascular and neurological function in workers exposed to hand-transmitted vibration
… on more than one test finger. Increased central sympathetic activity was hypothesised to result from increasing the stimulus by cooling more fingers. In two experiments on 12 healthy subjects, it was found that FSBPs measured simultaneously on four test fingers gave similar results to FSBP …
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The Autonomic Correlates of Listening Effort
… empirical evidence on autonomic nervous system activity and motivational intensity theory (Brehm, 1989; Wright, 1996), to provide a systematic, inclusive and theory-driven examination of the physiological correlates of listening effort. It was hypothesised that, to avoid wasting essential …
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What Resonates with you? Methods of Induced Cardiovascular Resonance
… dysfunction have benefited from balancing of parasympathetic and sympathetic activity through the practice of slow breathing exercises. In preliminary studies, patients with various autonomic dysfunctions used biofeedback of respiratory activity to slow breathing to a cadence of six cycles per …
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The Cardiovascular Demands of Division I Sideline Cheerleaders During Training and Football Games
… intensity, physiological load, maximal activity, and average activity) were collected at four practices and four games using a Zephyr Bioharness HR monitor. Prior to each practice and game, a 15-minute heart rate variability (HRV) reading was taken in the seated position. There was a …
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The effect of acute intradialytic exercise on cardiovascular responses in hemodialysis patients
… drop and autonomic dysfunction, and increasing sympathetic activity was also correlated with drops in BP during HD. These results indicate that IDEX does not exacerbate hemodynamic instability during HD regardless of hydration status and the timing of the exercise. We also observed the potential …
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An electrophysiologic investigation of the normal and ischemic left ventricle
… fibrillation. It is concluded that the sympathetic division of the autonomic nervous system normally projects a beneficial activity to the myocardium; however, no sympathetic innervation (as in beta-receptor blockade) or increased sympathetic activity (as in the anxious or excited …
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Oxidant-dependent regulation of L-type calcium channel activity by angiotensin in vascular smooth muscle
… blood flow. Increases in vessel wall stress or sympathetic activity stimulate vascular wall angiotensin signaling, resulting in smooth muscle contraction which directly increases peripheral resistance. Calcium influx through voltage-gated L-type calcium channels underlies vascular smooth muscle …
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Cardiovascular and Autonomic Nervous System Function: Impact of Glucose Ingestion, Hydration Status and Exercise in Heated Environments
… autonomic nervous system function, shifting the sympathetic/parasympathetic balance to higher sympathetic activity. Higher exercise intensity decreased fasting heart rate variability 24-hrs after cessation of exercise whereas lower exercise intensity did not alter heart rate variability. Acute …
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Sympathetic Nerve Modulation of Joint Pathology in Adjuvant-Induced Arthritis
… is increasing data suggesting a net increase in sympathetic tone plays an important role in rheumatoid arthritis. Several studies have reported altered distribution and density of autonomic nerves in patients with rheumatoid arthritis and animal models for the disease. This provides anatomical …
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