Pre- and Post-Race Hydration Status in Hyponatremic and Non-Hyponatremic Ultra-Endurance Athletes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11110%2F16%3A10327345" target="_blank" >RIV/00216208:11110/16:10327345 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26630/16:PU116664
Result on the web
<a href="http://dx.doi.org/10.4077/CJP.2016.BAE391" target="_blank" >http://dx.doi.org/10.4077/CJP.2016.BAE391</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4077/CJP.2016.BAE391" target="_blank" >10.4077/CJP.2016.BAE391</a>
Alternative languages
Result language
angličtina
Original language name
Pre- and Post-Race Hydration Status in Hyponatremic and Non-Hyponatremic Ultra-Endurance Athletes
Original language description
The monitoring of body mass (BM) plasma sodium concentration ([Na+]) and urinary specific gravity (U-sg) are com-monly used to help detect and prevent over- or dehydration in endurance athletes. We investigated pre-and post-race hydration status in 113 amateur 24-h ultra-runners, 100-km ultra-runners, multi-stage mountain bikers and 24-h mountain bikers, which drank ad libitum without any intervention and compared results of hyponatremic and non-hyponatremic finishers. On average, pre-race plasma [Na+] and both pre- and post-race levels of U-sg and BM were not significantly different between both groups. However, nearly 86% of the post-race hyponatremic (exercise-associated hyponatremia, EAH) and 68% of the normonatremic (non-EAH) ultra-athletes probably drank prior the race greater volumes than their thirst dictated regarding to individual pre race U-sg levels. Fluid intake during the race was equal and was not related to plasma [Na+], U-sg or BM changes. A significant decrease in post-race plasma [Na+], BM and an increasement in post-race U-sg was observed in EAH and non-EAH finishers. Moreover, pre-race plasma [Na+] was inversely associated with post-race percentage change in plasma [Na+], and pre-race U-sg and urinary [Na+] with percentage change in U-sg in both groups with and without post-race EAH. Thirteen (11.5%) finishers developed post-race EAH (plasma [Na+] < 135 mM). The incidence of EAH in ultra-endurance athletes competing in the Czech Republic was higher than reported previously.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
ED - Physiology
OECD FORD branch
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Result continuities
Project
—
Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chinese Journal of Physiology
ISSN
0304-4920
e-ISSN
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Volume of the periodical
59
Issue of the periodical within the volume
3
Country of publishing house
TW - TAIWAN (PROVINCE OF CHINA)
Number of pages
11
Pages from-to
173-183
UT code for WoS article
000378982100006
EID of the result in the Scopus database
2-s2.0-84977488986