{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,6,26]],"date-time":"2025-06-26T03:10:05Z","timestamp":1750907405444,"version":"3.41.0"},"reference-count":46,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2025,4,8]],"date-time":"2025-04-08T00:00:00Z","timestamp":1744070400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000297","name":"FRAXA Research Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100000297","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J intellect Disabil Res"],"published-print":{"date-parts":[[2025,7]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Fragile X Syndrome (FXS) is a genetic disorder caused by the lack of FMRP, a crucial protein for brain development and function. FMR1 mutations are categorized into premutation and full mutation (FXSFull), with somatic mosaicism (FXSMos) modulating the FXS phenotype. Recent studies identified muscle activity alterations during gait in FXS children. This study aims to explore the relationship between these muscle activity changes and motor fibre recruitment strategies during gait in FXS children.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Fifty\u2010four FXS children and fourteen healthy controls participated in the study. Gait trials at self\u2010selected speeds were recorded using four synchronized cameras and a surface electromyography system that captured bilateral activity of Gastrocnemius lateralis, Tibialis anterior, Rectus and Biceps femoris muscles. The continuous wavelet transform, using the \u2018bump\u2019 mother wavelet, provided the percentage distribution of signal energy across nine frequency bands (50\u2010Hz increments within a 450\u2010 to 10\u2010Hz spectrum) and the Instantaneous MeaN Frequency (IMNF) time\u2010frequency distribution.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Results indicated that both FXSFull and FXSMos children exhibit a distinct fibre recruitment strategy compared to controls, with a higher percentage of total energy and elevated IMNF (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This increased reliance on fast\u2010twitch fibres may contribute to the observed fatigability and exercise intolerance in FXS children.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jir.13238","type":"journal-article","created":{"date-parts":[[2025,4,8]],"date-time":"2025-04-08T09:59:46Z","timestamp":1744106386000},"page":"582-591","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Children With Fragile X Syndrome Display a Switch Towards Fast Fibres in Their Recruitment Strategy During Gait"],"prefix":"10.1111","volume":"69","author":[{"given":"Fabiola","family":"Spolaor","sequence":"first","affiliation":[{"name":"Department of Women's and Children's Health University of Padua  Padua Italy"},{"name":"Department of Information Engineering University of Padua  Padua Italy"},{"name":"Citt\u00e0 della Speranza Fondazione Istituto di Ricerca Pediatrica  Padua Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Federica","family":"Beghetti","sequence":"additional","affiliation":[{"name":"Department of Information Engineering University of Padua  Padua Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weronika","family":"Piatkowska","sequence":"additional","affiliation":[{"name":"Department of Information Engineering University of Padua  Padua Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Annamaria","family":"Guiotto","sequence":"additional","affiliation":[{"name":"Department of Information Engineering University of Padua  Padua Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roberta","family":"Polli","sequence":"additional","affiliation":[{"name":"Department of Women's and Children's Health University of Padua  Padua Italy"},{"name":"Citt\u00e0 della Speranza Fondazione Istituto di Ricerca Pediatrica  Padua Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elisa","family":"Bettella","sequence":"additional","affiliation":[{"name":"Department of Women's and Children's Health University of Padua  Padua Italy"},{"name":"Citt\u00e0 della Speranza Fondazione Istituto di Ricerca Pediatrica  Padua Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Valentina","family":"Liani","sequence":"additional","affiliation":[{"name":"Department of Women's and Children's Health University of Padua  Padua Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elisa","family":"di Giorgio","sequence":"additional","affiliation":[{"name":"Department of Developmental Psychology and Socialization University of Padua  Padua Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2624-5415","authenticated-orcid":false,"given":"Zimi","family":"Sawacha","sequence":"additional","affiliation":[{"name":"Department of Information Engineering University of Padua  Padua Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,4,8]]},"reference":[{"doi-asserted-by":"publisher","key":"e_1_2_8_2_1","DOI":"10.1016\/j.nbd.2024.106486"},{"doi-asserted-by":"publisher","key":"e_1_2_8_3_1","DOI":"10.1109\/TBME.2011.2170687"},{"volume-title":"Encyclopedia of the Neurological Sciences","year":"2014","author":"Aminoff M. 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