Circulating MicroRNA Expression and Serum Biomarker Changes After 30 Days of Head-Down Bed Rest
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چکیده
منابع مشابه
Hemolysis during and after 21 days of head‐down‐tilt bed rest
Hemoconcentration is observed in bed rest studies, descent from altitude, and exposure to microgravity. Hemoconcentration triggers erythrocyte losses to subsequently normalize erythrocyte concentration. The mechanisms of erythrocyte loss may involve enhanced hemolysis, but has never been measured directly in bed rest studies. Steady-state hemolysis was evaluated by measuring two heme degradatio...
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Short periods of weightlessness are associated with reduced stroke volume and left ventricular (LV) mass that appear rapidly and are thought to be largely dependent on plasma volume. The magnitude of these cardiac adaptations are even greater after prolonged periods of simulated weightlessness, but the time course during and the recovery from bed rest has not been previously described. We colle...
متن کاملChanges in the sympathetic nervous system induced by 42 days of head-down bed rest.
Changes in autonomic nervous system activity could be linked to the orthostatic intolerance (OI) that individuals suffer after a spaceflight or head-down bed rest (HDBR). We examined this possibility by assessing the sympathetic nervous system activity during 42 days of HDBR in seven healthy men. Heart rate variability was studied with the use of power spectral analysis, which provided indicato...
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Kamiya, Atsunori, Satoshi Iwase, Hiroki Kitazawa, Tadaaki Mano, Olga L. Vinogradova, and Irina B. Kharchenko. Baroreflex control of muscle sympathetic nerve activity after 120 days of 6° head-down bed rest. Am. J. Physiol. Regulatory Integrative Comp. Physiol. 278: R445– R452, 2000.—To examine how long-lasting microgravity simulated by 6° head-down bed rest (HDBR) induces changes in the baroref...
متن کاملLung function during and after prolonged head-down bed rest.
We determined the effects of prolonged head-down tilt bed rest (HDT) on lung mechanics and gas exchange. Six subjects were studied in supine and upright postures before (control), during [day 113 (D113)], and after (R + number of days of recovery) 120 days of HDT. Peak expiratory flow (PF) never differed between positions at any time and never differed from controls. Maximal midexpiratory flow ...
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ژورنال
عنوان ژورنال: Medicine & Science in Sports & Exercise
سال: 2019
ISSN: 1530-0315,0195-9131
DOI: 10.1249/01.mss.0000561718.28075.29