Document Detail

Urinary excretion of microelements in endurance-trained volunteers during restriction of muscular activity and chronic rehydration.
MedLine Citation:
PMID:  7517157     Owner:  NLM     Status:  MEDLINE    
The objective of this investigation was to determine the effect of daily intake of fluid and salt supplementation (FSS) on increased urinary losses of microelements that developed during hypokinesia (decreased number of walking steps/d). The studies were performed on 30 endurance-trained male volunteers aged 23-26 yr, with an averaged maximum oxygen uptake of 65 mL/kg/min during 364 d of hypokinesia (HK). All volunteers were divided into three equal groups: Ten volunteers were placed continuously under an average of 10,000 running steps/d (14.2 km/d) (control subjects), ten volunteers subjected continuously to HK without the use of FSS (hypokinetic subjects), and ten volunteers were continuously submitted to HK and consumed daily FSS (hyperhydrated subjects). For the simulation of the hypokinetic effect the hypokinetic and hyperhydrated volunteers were kept under an average of 3,000 walking steps/d (2.7 km/d) for 364 d. Prior to their exposure to HK the volunteers were on an average of 10,000 running steps/d (14.2 km/d). During the prehypokinetic period of 60 d and during the hypokinetic period of 364 d were determined renal excretion of microelements responses of endurance-trained volunteers. In the hyperhydrated volunteers urinary excretion of iron, zinc, copper, manganese, cobalt, nickel, lead, tin, chromium, aluminum, molybdenum, and vanadium decreased, whereas in the hypokinetic volunteers it increased significantly. It was concluded that chronic hyperhydration may be used to attenuate urinary excretion of microelements in endurance-trained volunteers during prolonged restriction of muscular activity.
Y G Zorbas; Y F Federenko; K A Naexu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biological trace element research     Volume:  40     ISSN:  0163-4984     ISO Abbreviation:  Biol Trace Elem Res     Publication Date:  1994 Mar 
Date Detail:
Created Date:  1994-08-02     Completed Date:  1994-08-02     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7911509     Medline TA:  Biol Trace Elem Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  189-202     Citation Subset:  IM    
Hypokinetic Physiology Laboratory, European Institute of Environmental Cybernetics, Athens, Greece.
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MeSH Terms
Blood Chemical Analysis
Blood Volume / physiology
Fluid Therapy*
Muscles / physiology*
Oxygen Consumption / physiology
Physical Education and Training
Physical Endurance / physiology*
Trace Elements / urine*
Reg. No./Substance:
0/Trace Elements

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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