{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,12]],"date-time":"2026-03-12T08:50:48Z","timestamp":1773305448656,"version":"3.50.1"},"reference-count":0,"publisher":"Aerospace Medical Association","issue":"10","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["aerosp med hum perform"],"published-print":{"date-parts":[[2019,10,1]]},"abstract":"<jats:p><jats:bold>BACKGROUND:<\/jats:bold> The aim of the study was to determine the characteristics of cervical muscle activity in different head postures when using helmet-mounted display in one fighter vs. two aircraft air combat within visual range (WVR).<jats:bold>METHODS:<\/jats:bold> Cervical EMG was measured with\n eight F\/A-18 pilots using the Joint Helmet Mounted Cueing System (JHMCS) during air combat maneuvering. In-flight G<jats:sub>z<\/jats:sub> acceleration and continuous head position were recorded. EMG activity is divided and presented in a matrix with three-class rotation and five-class flexion-extension\n postures.<jats:bold>RESULTS:<\/jats:bold> The mean muscle activity in sternocleidomastoids and cervical extensors was 28.9% of maximal voluntary contraction (MVC) and 44.8% MVC, respectively. Cervical flexor and extensor muscles are subjected to loading over MVC during high G<jats:sub>z<\/jats:sub> sorties. Cervical\n rotation combined with extension exceeded muscle force-producing capacity during high G<jats:sub>z<\/jats:sub>, resulting in a decline in muscle activity.<jats:bold>DISCUSSION:<\/jats:bold> Awkward postures, especially rotational ones, are more prone to increase loading over muscles\u2019 capacity. Overloading of\n muscles increases the risk of muscular and ligamentous injury. In addition, the lack of muscular support potentially leads to the G<jats:sub>z<\/jats:sub> loading being transferred to spinal structures via intervertebral discs and the vertebral column. The JHMCS helmet seems to change the pattern of\n most loading muscles toward the extensor (posterior) neck muscles.<jats:bold>Sovelius R, M\u00e4ntyl\u00e4 M, Heini H, Oksa J, Valtonen R, Tiitola L, Leino T. <jats:italic>Joint helmet-mounted cueing system and neck muscle activity during air combat maneuvering<\/jats:italic>. Aerosp Med Hum Perform. 2019; 90(10):834\u2013840.<\/jats:bold><\/jats:p>","DOI":"10.3357\/amhp.5281.2019","type":"journal-article","created":{"date-parts":[[2019,9,27]],"date-time":"2019-09-27T04:43:27Z","timestamp":1569559407000},"page":"834-840","source":"Crossref","is-referenced-by-count":16,"title":["Joint Helmet-Mounted Cueing System and Neck Muscle Activity During Air Combat Maneuvering"],"prefix":"10.3357","volume":"90","author":[{"given":"Roope","family":"Sovelius","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maunu","family":"M\u00e4ntyl\u00e4","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huhtala","family":"Heini","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juha","family":"Oksa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rasmus","family":"Valtonen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liisa","family":"Tiitola","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tuomo","family":"Leino","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1911","container-title":["Aerospace Medicine and Human Performance"],"original-title":[],"link":[{"URL":"https:\/\/asma.kglmeridian.com\/view\/journals\/amhp\/90\/10\/article-p834.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/asma.kglmeridian.com\/downloadpdf\/journals\/amhp\/90\/10\/article-p834.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/asma.kglmeridian.com\/downloadpdf\/journals\/amhp\/90\/10\/article-p834.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,10,7]],"date-time":"2024-10-07T12:20:36Z","timestamp":1728303636000},"score":1,"resource":{"primary":{"URL":"https:\/\/asma.kglmeridian.com\/view\/journals\/amhp\/90\/10\/article-p834.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,10,1]]},"references-count":0,"journal-issue":{"issue":"10"},"URL":"https:\/\/doi.org\/10.3357\/amhp.5281.2019","relation":{},"ISSN":["2375-6314","2375-6322"],"issn-type":[{"value":"2375-6314","type":"print"},{"value":"2375-6322","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,10,1]]}}}