{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T04:06:08Z","timestamp":1784693168534,"version":"3.55.0"},"reference-count":29,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T00:00:00Z","timestamp":1782345600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T00:00:00Z","timestamp":1782345600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["European Journal of Sport Science"],"published-print":{"date-parts":[[2026,7]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    This study reports biceps femoris long head (BFlh) fascicle length and eccentric knee flexion strength changes following a 9\u2010week in\u2010season low\u2010volume resistance training intervention in elite under\u201020\u2010year\u2010old (U20) male Gaelic footballers with and without previous hamstring injury. We included 26 male Gaelic footballers (age\u00a0=\u00a018.5\u00a0\u00b1\u00a00.5\u00a0years; height\u00a0=\u00a0183.1\u00a0\u00b1\u00a05.1\u00a0cm; body mass\u00a0=\u00a079.2\u00a0\u00b1\u00a07.9\u00a0kg) in this study, with 10 of these participants reporting previous hamstring injuries within the last 12\u00a0months. Participants performed two sets of four Nordic hamstring exercise (NHE) repetitions and three sets of six staggered\u2010stance Romanian deadlift (RDL) repetitions once per week for nine\u00a0weeks. Before and after the intervention, BFlh fascicle length was assessed via ultrasound and eccentric knee flexion strength was measured during the NHE. We ran separate linear mixed\u2010effects models for BFlh fascicle length and eccentric knee flexion strength, with fixed\u2010effects of time (baseline and follow\u2010up), limb\u2010type (previously injured and contralateral uninjured limbs of previously injured participants and between\u2010limb average of uninjured participants) and the time*limb\u2010type interaction. The linear mixed\u2010effects model for BFlh fascicle length revealed a significant main effect of time (\n                    <jats:italic>\u03b2<\/jats:italic>\n                    \u00a0=\u00a00.31\u00a0cm; SE\u00a0=\u00a00.15\u00a0cm;\n                    <jats:italic>p<\/jats:italic>\n                    \u00a0=\u00a00.04), while the time*limb\u2010type interaction was not statistically significant. The linear mixed\u2010effects model for eccentric knee flexion strength revealed no significant increase in eccentric knee flexion strength (\n                    <jats:italic>\u03b2<\/jats:italic>\n                    \u00a0=\u00a09.53\u00a0N, SE\u00a0=\u00a012.97\u00a0N,\n                    <jats:italic>p<\/jats:italic>\n                    \u00a0=\u00a00.47), while the time*limb\u2010type interaction was not statistically significant. These findings suggest changes to BFlh fascicle length and eccentric knee flexion strength from baseline to follow\u2010up were comparable across all limb\u2010types.\n                  <\/jats:p>","DOI":"10.1002\/ejsc.70204","type":"journal-article","created":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T16:30:04Z","timestamp":1782405004000},"source":"Crossref","is-referenced-by-count":0,"title":["Previous Hamstring Injury Does Not Impact Biceps Femoris Long Head Fascicle Length and Eccentric Knee Flexion Strength Changes Following a Low\u2010Volume Resistance Training Intervention in Elite Under\u201020\u2010Year\u2010Old Male Gaelic Footballers"],"prefix":"10.1002","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7310-7621","authenticated-orcid":false,"given":"Tommy","family":"Mooney","sequence":"first","affiliation":[{"name":"Gaelic Sports Research Centre Technological University Dublin  Dublin Ireland"},{"name":"Sports Medicine Research Department UPMC Sports Surgery Clinic  Dublin Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0430-4605","authenticated-orcid":false,"given":"Kevin","family":"Cronin","sequence":"additional","affiliation":[{"name":"Diagnostic Imaging Department, School of Medicine University College Dublin  Dublin Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shane","family":"Malone","sequence":"additional","affiliation":[{"name":"Gaelic Sports Research Centre Technological University Dublin  Dublin Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Neil","family":"Welch","sequence":"additional","affiliation":[{"name":"Sports Medicine Research Department UPMC Sports Surgery Clinic  Dublin Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kieran","family":"Collins","sequence":"additional","affiliation":[{"name":"Gaelic Sports Research Centre Technological University Dublin  Dublin Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2764-698X","authenticated-orcid":false,"given":"Jack","family":"Hickey","sequence":"additional","affiliation":[{"name":"Department of Sport Science and Nutrition Maynooth University  Maynooth County Kildare Ireland"},{"name":"Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre Australian Catholic University  Melbourne Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,6,25]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmjsem\u20102023\u2010001728"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/sms.14317"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1123\/ijspp.2021\u20100276"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0000000000003012"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0000000000003701"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1055\/a\u20101493\u20103082"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0277400"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s40279\u2010019\u201001178\u20107"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546508314432"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0000000000002123"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jelekin.2012.12.006"},{"key":"e_1_2_10_13_1","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports\u20102019\u2010100983"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.1123\/ijspp.2018\u20100947"},{"key":"e_1_2_10_15_1","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports\u20102021\u2010104936"},{"key":"e_1_2_10_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jsams.2019.12.006"},{"key":"e_1_2_10_17_1","doi-asserted-by":"publisher","DOI":"10.1123\/jsr.2019\u20100388"},{"key":"e_1_2_10_18_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11332\u2010021\u201000760\u20109"},{"key":"e_1_2_10_19_1","doi-asserted-by":"publisher","DOI":"10.2519\/jospt.2013.4837"},{"key":"e_1_2_10_20_1","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0000000000002782"},{"key":"e_1_2_10_21_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546514556638"},{"key":"e_1_2_10_22_1","doi-asserted-by":"publisher","DOI":"10.1111\/sms.13085"},{"key":"e_1_2_10_23_1","doi-asserted-by":"publisher","DOI":"10.1007\/s40279\u2010017\u20100762\u20107"},{"key":"e_1_2_10_24_1","doi-asserted-by":"publisher","DOI":"10.1123\/ijspp.2020\u20100726"},{"key":"e_1_2_10_25_1","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0000000000001333"},{"key":"e_1_2_10_26_1","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports\u20102015\u2010095362"},{"key":"e_1_2_10_27_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598\u2010024\u201071846\u2010w"},{"key":"e_1_2_10_28_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jsams.2021.01.001"},{"key":"e_1_2_10_29_1","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports\u20102018\u2010100045"},{"key":"e_1_2_10_30_1","doi-asserted-by":"publisher","DOI":"10.1155\/2022\/5131914"}],"container-title":["European 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