Search for dissertations about: "carotid baroreflex"

Found 3 swedish dissertations containing the words carotid baroreflex.

  2. 1. Cardiovascular function after long-term bed rest

    Author : Jonas Spaak; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Microgravity; simulated weightlessness; carotid baroreflex; static exercise; muscle chemoreflex; orthostasis; tilting; leg exercise; blood pressure; heart rate; stroke volume;

    Abstract : On earth, daily activities involve standing, changes of posture and various types of muscle action, all of which challenge the cardiovascular regulation. Removal of the orthostatic stress for a longer period, as during spaceflight or head-down tilt bed rest, consistently results in cardiovascular deconditioning. READ MORE

  4. 2. Psychomotor and cardiorespiratory functions during inert gas sedation

    Author : Anders Östlund; Karolinska Institutet; Karolinska Institutet; []
    Keywords : arterial baroreflex; heart rate; gas density; hyperbaric bradycardia; inert gas; inspiratory loading; narcosis; nitrous oxide; sedation; ventilation;

    Abstract : Relative hypoventilation and bradycardia are commonly observed in both resting and exercising divers. Divers are exposed to a complex environment where there are increases of hydrostatic pressure, gas density and partial pressure of sedating inert gas. READ MORE

  5. 3. Effects of physical activity and gravitational stress on cardiovascular control

    Author : Patrik Sundblad; Karolinska Institutet; Karolinska Institutet; []
    Keywords : leg exercise; posture; blood pressure; heart rate; cardiovascular model; heart function; stroke volume; tilting; orthostasis; simulated weightlessness; long-term hypokinesia;

    Abstract : The long-term goal of the present work was to characterize the responses to gravitational challenges in exercising humans after long-term head-down-tilt bedrest (HDT). HDT is a simulation of weightlessness with respect to effects on the systemic circulation, and previous studies in resting men have suggested that impairments of arterial baroreflexes contribute to the orthostatic intolerance seen after HDT and spaceflight. READ MORE