{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,6]],"date-time":"2026-09-06T22:02:26Z","timestamp":1788732146978,"version":"build-2803163510"},"reference-count":33,"publisher":"BMJ","issue":"5","license":[{"start":{"date-parts":[[2025,5,2]],"date-time":"2025-05-02T00:00:00Z","timestamp":1746144000000},"content-version":"unspecified","delay-in-days":1,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Swedish Armed Forces, Science & Technology Program","award":["AT9225030"],"award-info":[{"award-number":["AT9225030"]}]},{"name":"US Joint Warfighter Medical Research Program","award":["work unit no. N2024"],"award-info":[{"award-number":["work unit no. 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The MultiAgency, prospective, exploratory, non-intervention, cohort Study on Human Impact Exposure oNboard high-speed boats study aims to investigate the nature and magnitude of these impacts, their acute and long-term health effects, and potential injury prevention strategies to improve operational safety and performance.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods and analysis<\/jats:title>\n                    <jats:p>This is an ongoing multicentre, prospective, non-intervention, observational cohort study. The first participant was enrolled on 23 August 2024. High-speed boat operators log self-reported pain data via a smartphone app, using a Visual Analogue Scale and pain drawings. Triaxial accelerometers are installed on boat hulls and worn by participants to measure impact exposure. Data analysis assesses correlations between exposure and reported pain, enabling the identification of risk factors and the development of safety guidelines for high-speed boat operations.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Ethics and dissemination<\/jats:title>\n                    <jats:p>The study has received ethical approval from the relevant ethics committees, including the Swedish Ethics Review Authority (no. 2022-04931-01). All participants will provide informed consent before enrolment. The findings will be disseminated through technical reports, articles in peer-reviewed journals, conference presentations and direct engagement with military and maritime stakeholders to enhance training protocols and safety measures.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Trial registration number<\/jats:title>\n                    <jats:p>\n                      <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"clintrialgov\" xlink:href=\"NCT05299736\">NCT05299736<\/jats:ext-link>\n                      .\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2024-090993","type":"journal-article","created":{"date-parts":[[2025,5,2]],"date-time":"2025-05-02T08:06:06Z","timestamp":1746173166000},"page":"e090993","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["MultiAgency, prospective, exploratory, non-intervention, cohort Study on Human Impact Exposure oNboard high-speed boats (MASHIEN): protocol"],"prefix":"10.1136","volume":"15","clinical-trial-number":[{"clinical-trial-number":"nct05299736","registry":"10.18810\/clinical-trials-gov"},{"clinical-trial-number":"nct05299736","registry":"10.18810\/clinical-trials-gov"}],"author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7287-723X","authenticated-orcid":false,"given":"Johan","family":"Ullman","sequence":"first","affiliation":[{"name":", Swedish Armed Forces Centre for Defence Medicine, Gothenburg, Sweden"},{"name":"Department of Orthopaedics, Sahlgrenska Academy, University of Gothenburg, Goteborg, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7855-4033","authenticated-orcid":false,"given":"Stephen D","family":"Myers","sequence":"additional","affiliation":[{"name":"Occupational Performance Research Group, University of Chichester, Chichester, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kai-Thorsten","family":"Bretschneider","sequence":"additional","affiliation":[{"name":"Schifffahrt- und Arbeitsmedizin, Schifffahrtmedizinisches Institut der Marine, Kronshagen, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1510-2985","authenticated-orcid":false,"given":"Karen R","family":"Kelly","sequence":"additional","affiliation":[{"name":"Warfighter Performance, Naval Health Research Center, San Diego, California, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yann","family":"Daniel","sequence":"additional","affiliation":[{"name":"Paris Fire Brigade, Paris, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Victor","family":"Hurpin","sequence":"additional","affiliation":[{"name":"Military Training Hospital Clermont-Tonnerre, Brest, 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London, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel","family":"Perl","sequence":"additional","affiliation":[{"name":"Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicole","family":"Wijnands","sequence":"additional","affiliation":[{"name":"Hoofd Sociaal Medische Dienst, Den Helder, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Isabelle","family":"Vallee","sequence":"additional","affiliation":[{"name":"Canadian Armed Forces Health Support and Casualty Services, Ottawa, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Veerle","family":"Stevens","sequence":"additional","affiliation":[{"name":"Queen Astrid Military Hospital, Brussels, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9697-3795","authenticated-orcid":false,"given":"John 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