Nutritional status in humans during long‐duration bed rest
نویسندگان
چکیده
منابع مشابه
Bone metabolism and nutritional status during 30-day head-down-tilt bed rest.
Bed rest studies provide an important tool for modeling physiological changes that occur during spaceflight. Markers of bone metabolism and nutritional status were evaluated in 12 subjects (8 men, 4 women; ages 25-49 yr) who participated in a 30-day -6° head-down-tilt diet-controlled bed rest study. Blood and urine samples were collected twice before, once a week during, and twice after bed res...
متن کاملEffects of 21 days of bed rest, with or without artificial gravity, on nutritional status of humans.
Spaceflight and bed rest models of microgravity have profound effects on physiological systems, including the cardiovascular, musculoskeletal, and immune systems. These effects can be exacerbated by suboptimal nutrient status, and therefore it is critical to monitor nutritional status when evaluating countermeasures to mitigate negative effects of spaceflight. As part of a larger study to inves...
متن کاملAdrenal Function During Bed Rest
Plasma 17-OH-CS levels as well as adrenal secretory rates of aldosterone and eortisol were measured in healthy subjeers before and during periods of bed rest. The circadian rhythm of plasma 17-OH-CS was well maintained during bed rest. There was no change in adrenal eortisol secretion rates during bed rest. Aldosterone secretory rate did not change with bed rest; however, following a period out...
متن کاملMaximal instantaneous muscular power after prolonged bed rest in humans.
A reduction in lower limb cross-sectional area (CSA) occurs after bed rest (BR). This should lead to an equivalent reduction in maximal instantaneous muscular power (W(p)) if the body segments' lengths remain unchanged. W(p) was determined during maximal jumps off both feet on a force platform before and on days 2, 6, 10, 32, and 48 after a 42-day duration BR. CSA of thigh muscles was measured ...
متن کاملIncrease in epinephrine-induced responsiveness during microgravity simulated by head-down bed rest in humans.
The epinephrine (Epi)-induced effects on the sympathetic nervous system (SNS) and metabolic functions were studied in men before and during a decrease in SNS activity achieved through simulated microgravity. Epi was infused at 3 graded rates (0.01, 0.02, and 0. 03 microg. kg(-1). min(-1) for 40 min each) before and on the fifth day of head-down bed rest (HDBR). The effects of Epi on the SNS (as...
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ژورنال
عنوان ژورنال: The FASEB Journal
سال: 2006
ISSN: 0892-6638,1530-6860
DOI: 10.1096/fasebj.20.4.a622-c