Evidence map›Paper›PMID 35107134›Full record

SynthesisBritish medical bulletin2022

Rotational head acceleration and traumatic brain injury in combat sports: a systematic review.

Kabir Singh Lota, Nikos Malliaropoulos, Wiesław Blach, Takeshi Kamitani, Akira Ikumi, Vasileios Korakakis, Nicola Maffulli

Abstract readSystematic Review
In one paragraph

Synthesis in British medical bulletin, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing 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

19 citing papers in PubMed.

  1. Trial
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  3. Special Issue "Perspectives and Challenges in Sports Medicine for Combat Sports".Journal of functional morphology and kinesiology · 2026
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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

7 authors.

Kabir Singh LotaBarts and The London School of Medicine and Dentistry, London, E1 2AD, UK.ORCID 0000-0001-8536-6906
Nikos MalliaropoulosCentre for Sports and Exercise Medicine, Queen Mary University of London, E1 4DG, UK.
Wiesław BlachDepartment of Physical Education and Sport, University School of Physical Education, Wrocław 51-612, Poland.
Takeshi KamitaniSchool of Sport and Health Science, Tokai Gakuen University, 21-233 Nishinohora, Ukigai, Miyoshi, Aichi, 470-0207, Japan.
Akira IkumiDepartment of Orthopedic Surgery and Sports Medicine, Tsukuba University Hospital Mito Clinical Education and Training Center, 3-2-7 Miyamachi, Mito, Ibaraki 310-0015, Japan.
Vasileios KorakakisAspetar Orthopaedic and Sports Medicine Hospital, 29222, Doha, Qatar.
Nicola MaffulliCentre for Sports and Exercise Medicine, Queen Mary University of London, E1 4DG, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTraumatic brain injury (TBI) in combat sports is relatively common, and rotational acceleration (RA) is a strong biomechanical predictor of TBI. This review summarizes RA values generated from head impacts in combat sport and puts them in the context of present evidence regarding TBI thresholds. SOURCES OF DATA: PubMed, EMBASE, Web of Science, Cochrane Library and Scopus were searched from inception to 31st December 2021. Twenty-two studies presenting RA data from head impacts across boxing, taekwondo, judo, wrestling and MMA were included. The AXIS tool was used to assess the quality of studies. AREAS OF AGREEMENT: RA was greater following direct head strikes compared to being thrown or taken down. RA from throws and takedowns was mostly below reported injury thresholds. Injury thresholds must not be used in the absence of clinical assessment when TBI is suspected. Athletes displaying signs or symptoms of TBI must be removed from play and medically evaluated immediately. AREAS OF CONTROVERSY: Methodological heterogeneity made it difficult to develop sport-specific conclusions. The role of headgear in certain striking sports remains contentious. GROWING POINTS: RA can be used to suggest and assess the effect of safety changes in combat sports. Gradual loading of training activities based on RA may be considered when planning sessions. Governing bodies must continue to work to minimize RA generated from head impacts. AREAS TIMELY FOR DEVELOPING RESEARCH: Prospective research collecting real-time RA data is required to further understanding of TBI in combat sports.

Indexed as

BoxingBrain Injuries, TraumaticMartial ArtsAccelerationHumansProspective Studiesaccelerationbrain injuriesheadhumanssportstraumatic

Identifiers

PMID35107134
PMCPMC9351374

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.