Physical activity at moderate and high altitudes. Cardiovascular and respiratory morbidit
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چکیده
منابع مشابه
Respiratory and circulatory control at high altitudes.
Hyperventilation is one of the most important features of acclimatization to high altitude. Resting ventilation at extreme altitudes increases up to fourfold and exercise ventilation for a given work level increases to the same extent. Hypoxic stimulation of the peripheral chemoreceptors is the chief mechanism for the hyperventilation but there is also evidence that central sensitization of the...
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BACKGROUND Peru is experiencing a stage of nutritional transition where the principal characteristics are typical of countries undergoing development. OBJECTIVES The objectives of this study were the following: (a) compare physical growth patterns with an international standard; (b) determine biological age; and (c) analyze the double nutritional burden of adolescents living at a moderate alt...
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Bar-headed geese (Anser indicus) fly at high altitudes during their migration across the Himalayas and Tibetan plateau. However, we know relatively little about whether rearing at high altitude (i.e. phenotypic plasticity) facilitates this impressive feat because most of what is known about their physiology comes from studies performed at sea level. To provide this information, a comprehensive ...
متن کاملRespiration at High Altitudes *
It has been clearly recognized that a low barometric pressure, when first encountered, may interfere with the normal workings of the human machine, but that later by compensatory responses the body may become adapted to the new conditions. The outstanding variable encountered in ascents to high altitudes by airplane, dirigible, free balloon, or mountaineering is the tenuousness of the atmospher...
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ژورنال
عنوان ژورنال: Arquivos Brasileiros de Cardiologia
سال: 1999
ISSN: 0066-782X
DOI: 10.1590/s0066-782x1999000700011