Evidence map›Paper›PMID 40181011›Full record

ArticleScientific reports2025

No hyponatremia despite continuous plasma sodium decline in female runners during a seven stage ultramarathon.

Daniela Chlibková, Marina Filipenska, Beat Knechtle, Samo Rauter, Martin Trnka, Katja Weiss, Thomas Rosemann

Abstract read
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Daniela ChlibkováCentre of Sports Activities, Brno University of Technology, Brno, Czech Republic.
Marina FilipenskaDepartment of Biomedical Engineering, Brno University of Technology, Brno, Czech Republic.
Beat KnechtleInstitute of Primary Care, University of Zurich, Zurich, Switzerland. beat.knechtle@hispeed.ch.
Samo RauterFaculty of Sport, University of Ljubljana, Ljubljana, Slovenia.
Martin TrnkaHospital České Budějovice, České Budějovice, Czech Republic.
Katja WeissInstitute of Primary Care, University of Zurich, Zurich, Switzerland.
Thomas RosemannInstitute of Primary Care, University of Zurich, Zurich, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The role of sodium supplements and sex in the occurrence of exercise-associated hyponatremia (EAH) remains controversial. This study investigated hydration status in ultrarunners (19 males and 9 females) who completed seven marathons over seven consecutive days. Due to the limited number of female participants, no statistical comparison between sexes was performed. Plasma sodium concentration ([Na

Indexed as

HyponatremiaMarathon RunningRunningSodiumAdultFemaleHumansMaleMiddle AgedWater-Electrolyte BalanceSodiumMarathonMultistage racePlasma sodiumUltrarunners

Identifiers

PMID40181011
PMCPMC11968940

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.