{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T11:26:30Z","timestamp":1740137190805,"version":"3.37.3"},"reference-count":41,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2018,3,8]],"date-time":"2018-03-08T00:00:00Z","timestamp":1520467200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100008368","name":"Gigtforeningen","doi-asserted-by":"publisher","award":["R77\u20105214"],"award-info":[{"award-number":["R77\u20105214"]}],"id":[{"id":"10.13039\/100008368","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Scandinavian Med Sci Sports"],"published-print":{"date-parts":[[2018,6]]},"abstract":"In this study, we hypothesized that the recordings of multichannel mechanomyography (MMG<\/jats:styled-content>) of the upper trapezius muscle would reveal spatially dependent manifestations in the presence of delayed onset muscle soreness occurring 24\u00a0hours after eccentric exercise (ECC<\/jats:styled-content>). Sixteen participants performed high\u2010intensity eccentric exercises (5 sets of 10 eccentric contractions at 100% of max elevation force) targeting the upper trapezius on their dominant side. Twelve accelerometers were attached to record MMG<\/jats:styled-content> activity during submaximal exercise consisting of static and dynamic arm flexion and abduction. Measurements were taken before and 24\u00a0hours after ECC<\/jats:styled-content>. Average rectified value (ARV<\/jats:styled-content>), percentage of determinism (% DET<\/jats:styled-content>), and recurrence (% REC<\/jats:styled-content>) of the MMG<\/jats:styled-content> signals were computed to estimate the level of muscular activity and the magnitude of regularity of the MMG<\/jats:styled-content>. The ARV<\/jats:styled-content>, % REC<\/jats:styled-content>, and % DET<\/jats:styled-content> maps revealed heterogeneous MMG<\/jats:styled-content> activity of the upper trapezius 24\u00a0hours after ECC<\/jats:styled-content> when compared with before. Increased ARV<\/jats:styled-content>, % REC<\/jats:styled-content>, and % DET<\/jats:styled-content> were found 24\u00a0hours after ECC<\/jats:styled-content> when compared with before. The study provides new key information on how a single muscle responds to ECC<\/jats:styled-content>. Our findings suggest that multichannel MMG<\/jats:styled-content> and nonlinear analyses may detect muscular and musculo\u2010tendinous alterations due to ECC<\/jats:styled-content>.<\/jats:p>","DOI":"10.1111\/sms.13067","type":"journal-article","created":{"date-parts":[[2018,2,2]],"date-time":"2018-02-02T23:46:33Z","timestamp":1517615193000},"page":"1661-1670","source":"Crossref","is-referenced-by-count":3,"title":["Eccentric exercise induces spatial changes in the mechanomyographic activity of the upper trapezius muscle"],"prefix":"10.1111","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2164-234X","authenticated-orcid":false,"given":"P.","family":"Madeleine","sequence":"first","affiliation":[{"name":"Department of Health Science and Technology Sport Sciences Aalborg University Aalborg Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E. 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