Evidence map›Paper›PMID 35239684›Full record

SynthesisPloS one2022

Exercise-induced increase in blood-based brain-derived neurotrophic factor (BDNF) in people with multiple sclerosis: A systematic review and meta-analysis of exercise intervention trials.

Parnian Shobeiri, Amirali Karimi, Sara Momtazmanesh, Antônio L Teixeira, Charlotte E Teunissen, Erwin E H van Wegen, Mark A Hirsch, Mir Saeed Yekaninejad, Nima Rezaei

2 registry-linked trialsAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 27 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 2 pooled it
–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.

NCT05735405 naunknown statusnot on this map

Priming Effects of Aerobic Exercise on Cognitive Training of Patients With Ischemic and Hemorrhagic Stroke

TypeinterventionalSponsorFondazione Don Carlo Gnocchi ETSRan2022 to 2023Enrolled30ConditionsIschemic Stroke, Hemorrhagic StrokeArmsNeuropsychological evaluation, BDNF evaluation, Pedaling as a moderate intensity aerobic exercise, Cognitive Training, VO2 assessment
NCT06676618 narecruitingnot on this mapstarted 2025, after this paper: background citation

Effect of Multimodal Exercise Training on Disease Activity and Functional Status in Patients With Multiple Sclerosis

TypeinterventionalSponsorIstanbul University - CerrahpasaRan2025 to 2028Enrolled40ConditionsMultiple SclerosisArmsMultimodal Exercise Training, Control Group
3 · Its place in the literature

Who cites it

27 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  12. Impact of Age on Switching or Stopping Disease Modifying Therapies in Multiple Sclerosis.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
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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

9 authors.

Parnian ShobeiriSchool of Medicine, Children's Medical Center Hospital, Tehran University of Medical Sciences (TUMS), Tehran, Iran.ORCID 0000-0002-5282-3282
Amirali KarimiSchool of Medicine, Children's Medical Center Hospital, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
Sara MomtazmaneshSchool of Medicine, Children's Medical Center Hospital, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
Antônio L TeixeiraDepartment of Psychiatry and Behavioral Sciences, Neuropsychiatry Program, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, Texas, United States of America.ORCID 0000-0002-9621-5422
Charlotte E TeunissenDepartment of Clinical Chemistry, Neurochemistry Laboratory, Amsterdam Neuroscience, Amsterdam University Medical Centers, Vrije Universiteit, Boelelaan, Amsterdam, The Netherlands.
Erwin E H van WegenDepartment of Rehabilitation Medicine, Amsterdam Movement Sciences, Amsterdam Neuroscience, Amsterdam UMC, Location VUmc, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
Mark A HirschDepartment of Physical Medicine and Rehabilitation, Carolinas Medical Center, Carolinas Rehabilitation, Charlotte, North Carolina, United States of America.
Mir Saeed YekaninejadDepartment of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Nima RezaeiResearch Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.ORCID 0000-0002-3836-1827

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundExercise training may affect the blood levels of brain-derived neurotrophic factor (BDNF), but meta-analyses have not yet been performed comparing pre- and post-intervention BDNF concentrations in patients with multiple sclerosis (PwMS).

objectiveTo perform a meta-analysis to study the influence of exercise on BDNF levels and define components that modulate them across clinical trials of exercise training in adults living with multiple sclerosis (MS).

methodFive databases (PubMed, EMBASE, Cochrane Library, PEDro database, CINAHL) were searched up to June 2021. According to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses, we included 13 articles in the meta-analysis, including 271 subjects. To investigate sources of heterogeneity, subgroup analysis, meta-regression, and sensitivity analysis were conducted. We performed the meta-analysis to compare pre- and post-exercise peripheral levels of BDNF in PwMS.

resultsPost-exercise concentrations of serum BDNF were significantly higher than pre-intervention levels (Standardized Mean Difference (SMD): 0.33, 95% CI: [0.04; 0.61], p-value = 0.02). Meta-regression indicated that the quality of the included studies based on the PEDro assessment tool might be a source of heterogeneity, while no significant effect was found for chronological age and disease severity according to the expanded disability status scale.

conclusionThis systematic review and meta-analysis shows that physical activity increases peripheral levels of BDNF in PwMS. More research on the effect of different modes of exercise on BDNF levels in PwMS is warranted.

Indexed as

Brain-Derived Neurotrophic FactorMultiple SclerosisAdultExerciseExercise TherapyHumansBrain-Derived Neurotrophic Factor

Identifiers

PMID35239684
PMCPMC8893651

What OpenQuestion holds

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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.