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The renal system

par Poortmans, Jacques ;Zambraski, Edward E.J.
Référence Exercise Physiology: People and Ideas, Elsevier Inc., page (452-474)
Publication Publié, 2003

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Résumé :

The chapter reviews the alterations that occur in the body during the stress of acute exercise, including the decrease in renal blood flow, glomerular filtration rate, excretion of water and sodium/chloride, the release of renin-angiotensin and norepinephrine, increase in the excretion of proteins and other macromolecules, and changes in metabolic functions. Exercise alters renal hemodynamics, excretory function, and hormone release. Many of these changes can affect exercise performance. Renal function during exercise is usually not considered to be essential or critical in terms of limiting or determining exercise capacity. It is extremely difficult to assess the renal system during exercise. Changes in cardiovascular and thermoregulatory function with aging, point toward the alterations in kidney function with age. The problem of exercise or exercise and dehydration induce acute renal failure, which remains an issue. The role of the kidneys as an endocrine organ, not only for the release of renin-angiotensin but also norepinephrine, has profound implications, explaining the effects of chronic exercise on certain disease states. © 2003 American Physiological Society Published by Elsevier Ltd All rights reserved.