Evidence map›Paper›PMID 40357055›Full record

ArticleBMJ open sport & exercise medicine2025

Lowering the maximum legal tackle height in Scottish community women's rugby: an injury surveillance and video analysis study across two seasons.

Hannah Walton, Hamish Gornall, Isla J Shill, Anthony P Turner, Neil Graham, Lara Paul, Sharief Hendricks, Ross Tucker, Debbie Palmer

Abstract read
In one paragraph

Article in BMJ open sport & exercise medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

4 citing papers in PubMed.

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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.

Hannah WaltonEdinburgh Sports Medicine Research Network, University of Edinburgh Institute for Sport Physical Education and Health Sciences, Edinburgh, UK.ORCID 0009-0004-5569-9370
Hamish GornallEdinburgh Sports Medicine Research Network, University of Edinburgh Institute for Sport Physical Education and Health Sciences, Edinburgh, UK.ORCID 0009-0009-9409-4426
Isla J ShillEdinburgh Sports Medicine Research Network, University of Edinburgh Institute for Sport Physical Education and Health Sciences, Edinburgh, UK.ORCID 0000-0003-0175-2354
Anthony P TurnerEdinburgh Sports Medicine Research Network, University of Edinburgh Institute for Sport Physical Education and Health Sciences, Edinburgh, UK.
Neil GrahamScottish Rugby Union, Edinburgh, UK.
Lara PaulDivision of Physiological Sciences, Department of Human Biology, University of Cape Town, Cape Town, South Africa.
Sharief HendricksDivision of Physiological Sciences, Department of Human Biology, University of Cape Town, Cape Town, South Africa.ORCID 0000-0002-3416-6266
Ross TuckerInstitute of Sport and Exercise Medicine, Department of Exercise, Sport and Lifestyle Medicine, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, South Africa.ORCID 0000-0002-4294-4822
Debbie PalmerUK Collaborating Centre on Injury and Illness Prevention in Sport, University of Edinburgh, Edinburgh, UK.ORCID 0000-0002-4676-217X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objectives: The tackle carries the highest risk of concussion in women's rugby union. To reduce concussion risk, a lowered maximum tackle height (LTH) law, lowering the maximum legal tackle height from the shoulder to below the base of the sternum, was implemented across Scottish community rugby. This study aimed to assess the effect of the LTH on player head-contact events, proximity (location nearest the head (~30 cm)) and concussion incidence in Scottish women's community rugby. Methods: A retrospective video analysis study, alongside prospective injury data collection, compared differences in game metrics, tackle characteristics and time-loss injury (including concussion) between the pre-LTH (2022/2023) and LTH (2023/2024) seasons. Results: Head-to-head and head-to-shoulder proximity to the opponent for the tackler (head: rate ratio (RR):0.71 (95% CI 0.62 to 0.82), shoulder: RR:0.73 (95% CI 0.65 to 0.83)), and ball-carrier (head: RR:0.67 (95% CI 0.58 to 0.77), shoulder: RR:0.68 (95% CI 0.58 to 0.79)) were lower in the LTH season. Head contact to the opponent's shoulder decreased for the tackler (RR: 0.65 (95% CI 0.46 to 0.91)) and ball-carrier (RR: 0.52 (95% CI 0.35 to 0.78)). Tackler body position was lower (upright: RR:0.79 (95% CI 0.75 to 0.83), bent at waist: RR:1.34 (95% CI 1.25 to 1.42)), reducing red-zone (above the base of the sternum) contacts (RR:0.81 (95% CI 0.76 to 0.85)). Although non-significant, tackler concussion rates dropped (IR: 2.83 to 0.52/1000 player match hours; RR: 0.18 (95% CI 0.004 to 1.52)), while ball-carrier concussion rates increased (IR: 1.89 to 4.70/1000 player match hours; RR: 2.49 (95%CI 0.69 to 11.06)). Conclusion: Lowering the maximum tackle height to below the base of the sternum showed a reduction in red-zone contacts, head-to-head proximity and head-to-shoulder contact for the tackler and ball-carrier. There were no significant differences in concussion rates in the present study, and the limitations surrounding the small sample of injuries highlight the need for further research on the effect of injury prevention initiatives in women's rugby.

Indexed as

ConcussionRugbyWomen

Identifiers

PMID40357055
PMCPMC12067820

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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.