Evidence map›Paper›PMID 30967530›Full record

ArticleTranslational psychiatry2019

Acute exercise-induced enhancement of fear inhibition is moderated by BDNF Val66Met polymorphism.

Dharani Keyan, Richard A Bryant

Abstract read
In one paragraph

Article in Translational psychiatry, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Trial
  2. Article
  3. Review
  4. Article
  5. Review
  6. Exercise and Fear and Safety Learning.Current topics in behavioral neurosciences · 2024
    Review
  7. Review
  8. Article
  9. Review
  10. Impact of Stress and Exercise on Fear Extinction.Current topics in behavioral neurosciences · 2023
    Article
  11. Article
  12. Article
  13. Article
  14. Post-traumatic stress disorder: a state-of-the-art review of evidence and challenges.World psychiatry : official journal of the World Psychiatric Association (WPA) · 2019
    Article
  15. Acute Exercise on Memory Reconsolidation.Journal of clinical medicine · 2019
    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

2 authors.

Dharani KeyanUniversity of New South Wales, Sydney, Australia.
Richard A BryantUniversity of New South Wales, Sydney, Australia. r.bryant@unsw.edu.au.ORCID http://orcid.org/0000-0002-9607-819X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Rodent research indicates that acute physical exercise facilitates fear learning and inhibition. Expression of brain-derived neurotrophic factor (BDNF) may moderate the memory enhancing effects of acute exercise. We assessed the role of acute exercise in modulating extinction retention in humans, and investigated the extent to which the BDNF polymorphism influenced extinction retention. Seventy non-clinical participants engaged in a differential fear potentiated startle paradigm involving conditioning and extinction followed by random assignment to either intense exercise (n = 35) or no exercise (n = 35). Extinction retention was assessed 24 h later. Saliva samples were collected to index BDNF genotype. Exercised participants displayed significantly lower fear 24 h later relative to non-exercised participants. Moderation analyses indicated that after controlling for gender, the BDNF Val66Met polymorphism moderated the relationship between exercise and fear recovery 24 h later, such that exercise was associated with greater fear recovery in individuals with the Met allele. These findings provide initial evidence that acute exercise can impact fear extinction in humans and this effect is reduced in Met-allele carriers. This finding accords with the role of BDNF in extinction learning, and has implications for augmenting exposure-based therapies for anxiety disorders.

Indexed as

Conditioning, PsychologicalExerciseMemoryAdolescentBrain-Derived Neurotrophic FactorExtinction, PsychologicalFearFemaleHumansIndividualityInhibition, PsychologicalLearningMalePolymorphism, Single NucleotideYoung AdultBDNF protein, humanBrain-Derived Neurotrophic Factor

Identifiers

PMID30967530
PMCPMC6456490

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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.