Evidence map›Paper›PMID 30775214›Full record

ArticleGlobal spine journal2019

Contact Sports as a Risk Factor for Amyotrophic Lateral Sclerosis: A Systematic Review.

Ronen Blecher, Michael A Elliott, Emre Yilmaz, Joseph R Dettori, Rod J Oskouian, Akil Patel, Andrew Clarke, Mike Hutton, Robert McGuire, Robert Dunn and 3 more

Open access · goldAbstract read
In one paragraph

Article in Global spine journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
4.2field-weighted citation impact, top 6% 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.

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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 60 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Observational
  4. Review
  5. Article
  6. Article
  7. Article
  8. Soccer (football) and brain health.Journal of neurology · 2024
    Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. Brain Trauma Imaging.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2023
    Article
  18. Article
  19. Article
  20. A New Hypothesis for Alzheimer's Disease: The Lipid Invasion Model.Journal of Alzheimer's disease reports · 2022
    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

13 authors at 6 institutions in 5 countries.

Ronen BlecherSwedish Neuroscience Institute, Seattle, WA, USA.
Michael A ElliottSwedish Neuroscience Institute, Seattle, WA, USA.
Emre YilmazSwedish Neuroscience Institute, Seattle, WA, USA.ORCID https://orcid.org/0000-0002-1492-1201
Joseph R DettoriSpectrum Inc, Tacoma, WA, USA.
Rod J OskouianSwedish Neuroscience Institute, Seattle, WA, USA.
Akil PatelSwedish Neuroscience Institute, Seattle, WA, USA.
Andrew ClarkePrincess Elizabeth Orthopaedic Centre, Exeter, UK.
Mike HuttonPrincess Elizabeth Orthopaedic Centre, Exeter, UK.
Robert McGuireUniversity of Mississippi, Jackson, MS, USA.
Robert DunnUniversity of Cape Town, Cape Town, South Africa.
John DeVineGeorgia Health, Augusta, GA, USA.
Bruce TwaddleAuckland City Hospital, Auckland, New Zealand.
Jens R ChapmanSwedish Neuroscience Institute, Seattle, WA, USA.
Swedish Medical Center · USPrincess Elizabeth Orthopaedic Centre · GBAuckland City Hospital · NZTel Aviv University · ILUniversity of Cape Town · ZAUniversity of Mississippi · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

designSystematic review.

introductionAmyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease, ultimately resulting in paralysis and death. The condition is considered to be caused by a complex interaction between environmental and genetic factors. Although vast genetic research has deciphered many of the molecular factors in ALS pathogenesis, the environmental factors have remained largely unknown. Recent evidence suggests that participation in certain types of sporting activities are associated with increased risk for ALS.

objectiveTo test the hypothesis that competitive sports at the highest level that involve repetitive concussive head and cervical spinal trauma result in an increased risk of ALS compared with the general population or nonsport controls.

methodsElectronic databases from inception to November 22, 2017 and reference lists of key articles were searched to identify studies meeting inclusion criteria.

resultsSixteen studies met the inclusion criteria. Sports assessed (professional or nonprofessional) included soccer (n = 5), American football (n = 2), basketball (n = 1), cycling (n = 1), marathon or triathlon (n = 1), skating (n = 1), and general sports not specified (n = 11). Soccer and American football were considered sports involving repetitive concussive head and cervical spinal trauma. Professional sports prone to repetitive concussive head and cervical spinal trauma were associated with substantially greater effects (pooled rate ratio [RR] 8.52, 95% CI 5.18-14.0) compared with (

conclusionsOur review suggests that increased susceptibility to ALS is significantly and independently associated with 2 factors: professional sports and sports prone to repetitive concussive head and cervical spinal trauma. Their combination resulted in an additive effect, further increasing this association to ALS.

Indexed as

amyotrophic lateral sclerosis (ALS)associationathletesfootballmeta-analysismotor neuron diseaserisk factorsoccersportssystematic review

Identifiers

PMID30775214
PMCPMC6362556
OpenAlexW2914153601

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.