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The physical contact inherent in the game means that players are at increased risk of concussive injury. In 2019, World Rugby created a new category of permitted headgear under Law 4 as a medical device. This established a pathway for headgear designed to reduce peak accelerations to be worn in matches. Investigations of the potential of soft-shelled protective headgear to reduce head impact accelerations have been mostly limited to the analysis of linear kinematics. However rotational head impact accelerations have long been implicated as far more injurious. The aim of this study, therefore, was to assess the linear and rotational acceleration reduction brought about by soft-shelled rugby headgear. A Hybrid III headform and neck were dropped onto a modular elastomer programmer impact surface, impacting at four different velocities (1.7\u20133.4\u00a0m\/s) in five different impact orientations. Impact surface angles were 0\u00b0, 30\u00b0, and 45\u00b0. Peak linear and rotational accelerations, PLA and PRA respectively, were recorded. All headgear significantly reduced PLAs and PRAs when compared to a no headgear scenario. The new generation, headgear reduced all measures significantly more than the older generation of headgear. Impact locations offset from the center of mass of the headform resulted in the highest PRAs measured. As the impact surface angle increased, both PLAs and PRAs decreased. The study demonstrated that headgear tested lowered PLAs by up to 50%, and PRAs by up to 60% compared to the bare headform. Our data suggest that new generation headgear could make a difference on the field in reducing injurious impact accelerations in a collision.<\/jats:p>","DOI":"10.1007\/s10439-022-02912-5","type":"journal-article","created":{"date-parts":[[2022,1,20]],"date-time":"2022-01-20T20:02:59Z","timestamp":1642708979000},"page":"1546-1564","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Potential of Soft-Shell Rugby Headgear to Mitigate Linear and Rotational Peak Accelerations"],"prefix":"10.1007","volume":"50","author":[{"given":"Danyon","family":"Stitt","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9899-3738","authenticated-orcid":false,"given":"Natalia","family":"Kabaliuk","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Keith","family":"Alexander","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nick","family":"Draper","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2022,1,20]]},"reference":[{"issue":"3","key":"2912_CR1","doi-asserted-by":"publisher","first-page":"240","DOI":"10.1080\/15389580309879","volume":"4","author":"M Aare","year":"2003","unstructured":"Aare, M., and P. 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