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Salivary osmolality measured by MX3 hydration testing system demonstrates high reliability but limited validity in elite athlete hydration assessment.

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Title: Salivary osmolality measured by MX3 hydration testing system demonstrates high reliability but limited validity in elite athlete hydration assessment.
Authors: Pettersson S; Center for Health and Performance, Department of Food and Nutrition, and Sport Science, University of Gothenburg, Gothenburg, Sweden.; Swedish Olympic Committee, Sofiatornet, Olympiastadion, Stockholm, Sweden., Tamm L; Swedish Olympic Committee, Sofiatornet, Olympiastadion, Stockholm, Sweden., Mattsson S; Swedish Olympic Committee, Sofiatornet, Olympiastadion, Stockholm, Sweden., Kalén A; Swedish Olympic Committee, Sofiatornet, Olympiastadion, Stockholm, Sweden.; Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, Luleå, Sweden.
Source: PloS one [PLoS One] 2026 Jun 03; Vol. 21 (6), pp. e0349955. Date of Electronic Publication: 2026 Jun 03 (Print Publication: 2026).
Publication Type: Journal Article
Journal Info: Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE
Database: MEDLINE Ultimate
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  Data: <searchLink fieldCode="AU" term="%22Pettersson+S%22">Pettersson S</searchLink>; Center for Health and Performance, Department of Food and Nutrition, and Sport Science, University of Gothenburg, Gothenburg, Sweden.; Swedish Olympic Committee, Sofiatornet, Olympiastadion, Stockholm, Sweden.<br /><searchLink fieldCode="AU" term="%22Tamm+L%22">Tamm L</searchLink>; Swedish Olympic Committee, Sofiatornet, Olympiastadion, Stockholm, Sweden.<br /><searchLink fieldCode="AU" term="%22Mattsson+S%22">Mattsson S</searchLink>; Swedish Olympic Committee, Sofiatornet, Olympiastadion, Stockholm, Sweden.<br /><searchLink fieldCode="AU" term="%22Kalén+A%22">Kalén A</searchLink>; Swedish Olympic Committee, Sofiatornet, Olympiastadion, Stockholm, Sweden.; Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, Luleå, Sweden.
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  Data: <searchLink fieldCode="JN" term="%22101285081%22">PloS one</searchLink> [PLoS One] 2026 Jun 03; Vol. 21 (6), pp. e0349955. <i>Date of Electronic Publication: </i>2026 Jun 03 (<i>Print Publication: </i>2026).
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        Value: 10.1371/journal.pone.0349955
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              Text: 2026 Jun 03
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