1,721,650 research outputs found
To dip or not to dip : of arterial pressure physiology, system's analysis, and information
No full textObesity and stress
No full textObesity is a complex, diffuse premorbid condition, characterized by an array of alterations in regulatory mechanisms, that have been associated with a higher risk for metabolic and cardiovascular diseases. Given the high prevalence of the condition we could accept the concept of 'obese epidemics'. However, in spite of a critical focus both of the medical profession and of mass media, coupled with extremely elevated costs of obesity, some experts state that 'therapy could be more dangerous than the disease'. Obesity derives from a long standing interaction between genetics and environment. Long years of maladaptive life styles (overeating and sedentary habits) are the consequence of an ill-regulated 'reward system'. Altered regulation of alimentary behavior seems critically dependent upon an unbalanced neurohormonal central receptor function. From a practical point of view it might be useful to introduce the concept of stress, as a way to provide quantitative parameters of the environmental effects on individual patients. Spectral analysis of cardiovascular variability provides quantitative indices of the interaction between efferent vagal and sympathetic modulatory activity, and of the influence of obesity. This condition produces autonomic alterations that appear related to attendant hormonal disturbances. From a therapeutical point of view new habits, not diets; an integrated multidisciplinary approach to healthy eating, not simply drugs or ideal weight; an equilibrium between theoretical principles and complex, tailored individual treatments
Cardiovascular physiology, emotions, and clinical applications : are we ready for prime time?
No full textThis article is related to cardiovascular physiology mechanisms involved in emotions, in particular it shows autonomic nervous system (ANS) role. The role of ANS may be of particular importance when considering that emotional involvement may play an etiopathogenetic role many clinical conditions, such as cardiac ischemic diseases or functional syndromes. This paper describe also a modern technique, autoregressive spectral analysis of cardiovascular variabilities, employed to study in clinical setting ANS, then to study emotional involvement in many clinical conditions
Autonomic assessment as a tool for individually tailoring life style changes for chronic disease prevention
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