Evidence map›Paper›PMID 38374149›Full record

Trial reportScientific reports2024

Omega-3 fatty acid supplementation affects tryptophan metabolism during a 12-week endurance training in amateur runners: a randomized controlled trial.

Maja Tomczyk, Monika Bidzan-Wiącek, Jakub Antoni Kortas, Magdalena Kochanowicz, Zbigniew Jost, Helena L Fisk, Philip C Calder, Jędrzej Antosiewicz

Registry-linked trialOpen access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05520437 (Omega-3 Fatty Acids Supplementation on Stress-induced Changes to Kynurenine Metabolism and Mood in Physically Active and Inactive Males), which is not on this map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 12% of its field
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.

NCT05520437 naunknown statusnot on this map

Omega-3 Fatty Acids Supplementation on Stress-induced Changes to Kynurenine Metabolism and Mood in Physically Active and Inactive Males

TypeinterventionalSponsorMedical University of GdanskRan2020 to 2023Enrolled80ConditionsStress-induced Mood, Kynurenine Pathway and Its MetabolitesArmsOmega-3 fatty acids, Placebo
3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 9 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Gestational kynurenine metabolites mediate effects of pregnancy adiposity on child negative affect.Journal of child psychology and psychiatry, and allied disciplines · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Dietary habits and vaginal environment: can a beneficial impact be expected?Frontiers in cellular and infection microbiology · 2025
    Article
  10. Article
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 at 4 institutions in 2 countries.

Maja Tomczyk *Department of Biochemistry, Gdansk University of Physical Education and Sport, 80-336, Gdansk, Poland. maja.tomczyk@awf.gda.pl.
Monika Bidzan-Wiącek *Department of Bioenergetics and Physiology of Exercise, Medical University of Gdansk, 80-211, Gdansk, Poland.
Jakub Antoni KortasDepartment of Biomechanics and Sports Engineering, Gdansk University of Physical Education and Sport, 80-336, Gdansk, Poland.
Magdalena KochanowiczDepartment of Physiotherapy, Medical University of Gdansk, 80-211, Gdansk, Poland.
Zbigniew JostDepartment of Biochemistry, Gdansk University of Physical Education and Sport, 80-336, Gdansk, Poland.
Helena L FiskSchool of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK.
Philip C CalderSchool of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK.
Jędrzej AntosiewiczDepartment of Bioenergetics and Physiology of Exercise, Medical University of Gdansk, 80-211, Gdansk, Poland. jant@gumed.edu.pl.
Gdańsk Medical University · PLGdansk University of Physical Education and Sport · PLUniversity Hospital Southampton NHS Foundation Trust · GBUniversity of Southampton · GB

Funding

National Science Center (Poland) 2018/31/N/NZ7/02962National Science Center (Poland) 2019/35/N/NZ7/03757
6 · The paper itself

Abstract

The effects of long-term omega-3 polyunsaturated fatty acid (n-3 PUFA) supplementation during endurance training on tryptophan (Trp) metabolism and mental state of healthy individuals have not been evaluated so far. Concentrations of plasma Trp, its metabolites and IL-6 were assessed in 26 male runners before and after a 12-week training program combined with supplementation of n-3 PUFAs (O-3 + TRAIN group) or medium chain triglycerides (MCTs; TRAIN group). After the 12-week program participants' mood before and after stress induction was also assessed. The effects of the same supplementation protocol were evaluated also in 14 inactive subjects (O-3 + SEDEN group). Concentrations of 3-hydroxykynurenine (3-HK) and picolinic acid (PA) significantly increased only in the O-3 + TRAIN group (p = 0.01; [Formula: see text] = 0.22 and p = 0.01; [Formula: see text]= 0.26). Favorable, but not statistically significant changes in the concentrations of kynurenic acid (KYNA) (p = 0.06; [Formula: see text]= 0.14), xanthurenic acid (XA) (p = 0.07; [Formula: see text]= 0.13) and 3-hydroxyanthranilic acid (3-HAA) (p = 0.06; [Formula: see text]= 0.15) and in the ratio of neurotoxic to neuroprotective metabolites were seen also only in the O-3 + TRAIN group. No changes in mood and IL-6 concentrations were observed in either group. Supplementation with n-3 PUFAs during endurance training has beneficial effects on Trp's neuroprotective metabolites.Trial registry: This study was registered at ClinicalTrials.gov with identifier NCT05520437 (14/07/2021 first trial registration and 2018/31/N/NZ7/02962 second trial registration).

Indexed as

Endurance TrainingFatty Acids, Omega-3Dietary SupplementsHumansInterleukin-6MaleTriglyceridesTryptophanFatty Acids, Omega-3Interleukin-6TriglyceridesTryptophan3-hydroxykynurenineEndurance trainingOmega-3 fatty acidsPicolinic acidTryptophan metabolism

Identifiers

PMID38374149
PMCPMC10876641
OpenAlexW4391988826

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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.