Evidence map›Paper›PMID 39811405›Full record

ArticleSports medicine and health science2025

Defecation after magnesium supplementation enhances cognitive performance in triathletes.

Chen-Chan Wei, M Brennan Harris, Mengxin Ye, Andrew Nicholls, Ahmad Alkhatib, Luthfia Dewi, Chih-Yang Huang, Chia-Hua Kuo

Abstract read
In one paragraph

Article in Sports medicine and health science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
  2. 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

8 authors.

Chen-Chan WeiLaboratory of Exercise Biochemistry, University of Taipei, Taipei City, Taiwan, China.
M Brennan HarrisDepartment of Kinesiology and Health Sciences, William and Mary, Williamsburg, VA, USA.
Mengxin YeCollege of Physical Education and Science, Zhejiang Normal University, Jinhua, 321004, China.
Andrew NichollsLaboratory of Exercise Biochemistry, University of Taipei, Taipei City, Taiwan, China.
Ahmad AlkhatibCollege of Life Sciences, Birmingham City University, Birmingham, UK.
Luthfia DewiLaboratory of Exercise Biochemistry, University of Taipei, Taipei City, Taiwan, China.
Chih-Yang HuangCardiovascular and Mitochondrial Related Disease Research Center, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, 970, Taiwan, China.
Chia-Hua KuoLaboratory of Exercise Biochemistry, University of Taipei, Taipei City, Taiwan, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Constipation is correlated with diminished cognitive function, revealing a possible rectum-brain connection. In this counter-balanced crossover trial, 13 elite triathletes underwent a Stroop test to assess cognitive function and executive control. The Stroop test was conducted both with and without magnesium oxide intake, with a 1-week washout period between sessions. Oxygenation and blood distribution during the cognitive challenge were measured using Near-Infrared Spectroscopy (NIRS). Measurements were taken in both the prefrontal brain and the sub-navel region, where the highest glucose uptake was detected under the 18F-fluorodeoxyglucose Positron Emission Tomography (PET) scan. A significant reduction in completion time for the Stroop test was observed after defecation compared to the non-defecated condition (non-defecation: [27.1 ​± ​1.1] s; non-magnesium defecation: [24.4 ​± ​0.9] s; magnesium defecation: [23.4 ​± ​0.8] s,

Indexed as

ConstipationDantianExerciseRectumStool emptyTriathlon

Identifiers

PMID39811405
PMCPMC11726056

What OpenQuestion holds

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Registered trials

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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.