title: [Renal functioning and human body liquids during 5-day dry immersion].
abstract: Renal function and body composition, including liquids, were investigated in 14 essentially healthy male subjects during simulation of some spaceflight effects by 5-d dry immersion (DI). Noninvasive measurement of water spaces of organism was performed with the methods of bio-impedance analysis (BIA). Increase of renal excretion of liquids and appearance of negative water balance were observed. BIA revealed reductions of total body and extracellular liquids and a decrease of circulating plasma volume. This means, that DI induced hypohydration of organism. In the post-DI period, the hydration status regained its baseline level fairly soon. Lean body mass slightly decreased; adipose mass, on the contrary, exceeded baseline values. Moreover, the experiment evidenced technical impossibility to obtain valid impedansimetry data in DI.
authors.forename: V B
authors.initials: VB
authors.lastname: Noskov
authors.forename: I M
authors.initials: IM
authors.lastname: Larina
authors.forename: L Kh
authors.initials: LKh
authors.lastname: Pastushkova
authors.forename: I V
authors.initials: IV
authors.lastname: Dobrokhotov
authors.forename: O A
authors.initials: OA
authors.lastname: Valeeva
authors.forename: M
authors.initials: M
authors.lastname: Coupe
authors.forename: M -A
authors.initials: M-
authors.lastname: Custaud
authors.forename: A M
authors.initials: AM
authors.lastname: Novoselova
mesh_terms: D000328:Adult; D000337:Aerospace Medicine; D001826:Body Fluids / Q000502:physiology*; D004231:Diuresis / Q000502:physiology; D017097:Electric Impedance; D006801:Humans; D007101:Immersion; D007668:Kidney / Q000502:physiology*; D007677:Kidney Function Tests; D008297:Male; D009043:Motor Activity / Q000502:physiology; D013026:Space Flight; D014893:Weightlessness / Q000009:adverse effects