Search for dissertations about: "sympathetic tone"

Showing result 1 - 5 of 19 swedish dissertations containing the words sympathetic tone.

  2. 1. Blood Flow in Human Skeletal Muscle : The Effect of Adrenaline and the Influence of a Small Muscle Injury

    Author : Torbjörn Vedung; Jan Henriksson; Jan Lundvall; Södersjukhuset Karolinska Institutet. Dept of Hand Surgery Dept of Physiology and Pharmacology; Karolinska Institutet; Karolinska Institutet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; adrenaline; blood flow; blood redistribution; ischemia; muscle injury; skeletal muscle; strain-gauge plethysmography; sympathetic tone; transmural pressure; 99mTechnetium clearance; tennis elbow; venous compliance; venous occlusion plethysmography; 133Xenon clearance; adrenaline;

    Abstract : A variety of vasoregulatory systems are involved in the complex control of blood flow inhuman skeletal muscle. The interaction between these systems where one system canoverride or modify the other makes blood flow regulation complicated. READ MORE

  4. 2. Heart Rate Variability in Stress-related Fatigue, Adolescent Anxiety and Depression and its Connection to Lifestyle

    Author : Erik Olsson; Lennart Melin; Ulf Lundberg; Uppsala universitet; []
    Keywords : heart rate variability; autonomic nervous system; vagal tone; allostatic load; stress; fatigue; anxiety; depression; continuous performance; attention; cardiovascular risk; lifestyle; physical activity;

    Abstract : Heart rate varies constantly as a consequence of activity in the sympathetic and parasympathetic autonomic nervous systems (SNS and PNS). In short-term recordings, heart rate variability (HRV) is mostly related to the inhibitory activity of the vagal nerves, which are part of the PNS. READ MORE

  5. 3. Adrenoceptors and nerve growth factor. Effects of electro-acupuncture and physical exercise in rats with steroid-induced polycystic ovaries

    Author : Luigi Manni; Göteborgs universitet; []
    Keywords : ;

    Abstract : Polycystic ovary syndrome (PCOS) is complex endocrine and metabolic disorder associated with ovulatory dysfunction, follicular cyst and hyperandrogenism. The abnormalities detected in PCOS have been attributed to primary defects in the hypothalamic-pituitary unit, the ovarian microenvironment, the adrenal gland, and the insulin/insulin-like growth factor (IGF)-1 metabolic regulatory system. READ MORE

  6. 4. Studies of lipolysis and neuroendocrine rhythms in cluster headache

    Author : Eva Laudon Meyer; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Cluster headache; autonomic nervous system; hypothalamus; lipolysis; microdialysis;

    Abstract : Cluster headache (CH) is characterised by excruciating, unilateral headache attacks, which in the episodic form appear in clusters for weeks or even months. The headache attacks are often accompanied by ipsilateral, cranial autonomic symptoms supporting a local peripheral sympathetic deficit and a parasympathetic discharge. READ MORE

  7. 5. Consequences of Arterial Switch Operation in Children Born with Transposition of the Great Arteries

    Author : Cecilia Falkenberg; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Transpositon of the great arteries; arterial switch operation; autonomous nerves system; norepinephrine; heart rate variability; cardiopulmonary bypass; piglets;

    Abstract : Abstract Background: The introduction of the arterial switch operation (ASO) made it the procedure of choice for surgical correction of transposition of the great arteries. A majority of the sympathetic nerves innervate the heart alongside the great vessels; these are therefore likely to be damaged during the surgical procedure; imposing new challenges and questions that need to be addressed. READ MORE