{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T00:01:51Z","timestamp":1774569711979,"version":"3.50.1"},"reference-count":31,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2026,2,20]],"date-time":"2026-02-20T00:00:00Z","timestamp":1771545600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,2,20]],"date-time":"2026-02-20T00:00:00Z","timestamp":1771545600000},"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":[[2026,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    This study aimed to investigate the influence of chronological age, anthropometric characteristics and biological maturity on eccentric knee flexion strength during the Nordic hamstring exercise in female international youth soccer players. We included 50 under\u201015\u2010year\u2010old (chronological age\u00a0=\u00a014.1\u00a0\u00b1\u00a00.4\u00a0years) and 31 under\u201016\u2010year\u2010old (chronological age\u00a0=\u00a015.0\u00a0\u00b1\u00a00.5\u00a0years) female international youth soccer players as participants in this study. We measured each participant's body mass, height and biological maturity expressed as the percentage of predicted adult height (PAH%). Each participant performed three maximal effort repetitions of the Nordic hamstring exercise on a field\u2010based testing device (NordBord, VALD Performance, Brisbane, Australia) to measure their eccentric knee flexion strength. We used linear regression to investigate individual associations between eccentric knee flexion strength and each predictor variable (body mass, height, chronological age and PAH%). In addition, a partial least squares (PLS) regression model was developed to predict the average eccentric knee flexion strength. Eccentric knee flexion strength had statistically significant associations with body mass (\n                    <jats:italic>p<\/jats:italic>\n                    \u00a0&lt;\u00a00.01 and\n                    <jats:italic>R<\/jats:italic>\n                    <jats:sup>2<\/jats:sup>\n                    \u00a0=\u00a00.34), PAH% (\n                    <jats:italic>p<\/jats:italic>\n                    \u00a0&lt;\u00a00.01 and\n                    <jats:italic>R<\/jats:italic>\n                    <jats:sup>2<\/jats:sup>\n                    \u00a0=\u00a00.18) and chronological age (\n                    <jats:italic>p<\/jats:italic>\n                    \u00a0=\u00a00.03 and\n                    <jats:italic>R<\/jats:italic>\n                    <jats:sup>2<\/jats:sup>\n                    \u00a0=\u00a00.06) but not with height (\n                    <jats:italic>p<\/jats:italic>\n                    \u00a0=\u00a00.11 and\n                    <jats:italic>R<\/jats:italic>\n                    <jats:sup>2<\/jats:sup>\n                    \u00a0=\u00a00.03). The 2\u2010component PLS model explained 36% of variance in eccentric knee flexion strength, with body mass and PAH% the most influential predictors. Body mass and biological maturation status should be considered when interpreting eccentric knee flexion strength testing results during the Nordic hamstring exercise in female youth soccer players as these factors appear more influential than chronological age or height in determining test performance.\n                  <\/jats:p>","DOI":"10.1002\/ejsc.70135","type":"journal-article","created":{"date-parts":[[2026,2,21]],"date-time":"2026-02-21T01:54:32Z","timestamp":1771638872000},"source":"Crossref","is-referenced-by-count":0,"title":["Influence of Chronological Age, Anthropometric Characteristics and Biological Maturity on Eccentric Knee Flexion Strength During the Nordic Hamstring Exercise in Female International Youth Soccer Players"],"prefix":"10.1002","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2764-698X","authenticated-orcid":false,"given":"Jack T.","family":"Hickey","sequence":"first","affiliation":[{"name":"Department of Sport Science and Nutrition Maynooth University  Kildare Ireland"},{"name":"Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre Australian Catholic University  Melbourne Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tommy R.","family":"Lundberg","sequence":"additional","affiliation":[{"name":"Division of Clinical Physiology Department of Laboratory Medicine ANA Futura Karolinska Insitutet  Huddinge Sweden"},{"name":"Unit of Clinical Physiology Karolinska University Hospital  Stockholm Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cian","family":"Sweeney","sequence":"additional","affiliation":[{"name":"School of Science and Technology Nottingham Trent University  Nottingham UK"},{"name":"Leicester Diabetes Centre Leicester General Hospital, University Hospitals of Leicester NHS Trust  Leicester UK"},{"name":"Diabetes Research Centre College of Life Sciences, University of Leicester  Leicester UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"\u00c1ine","family":"MacNamara","sequence":"additional","affiliation":[{"name":"School of Health and Human Performance Faculty of Science and Health Dublin City University  Dublin Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3443-2763","authenticated-orcid":false,"given":"Liam","family":"Sweeney","sequence":"additional","affiliation":[{"name":"Department of Sport Science and Nutrition Maynooth University  Kildare Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2026,2,20]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/sms.14696"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1080\/02640418608732093"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1123\/ijspp.2015\u20100513"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1080\/14763141.2021.2003850"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chemolab.2004.12.011"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1186\/s40798\u2010021\u201000298\u20107"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ptsp.2021.10.009"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.3389\/fspor.2019.00003"},{"key":"e_1_2_11_10_1","doi-asserted-by":"publisher","DOI":"10.1080\/24733938.2017.1363908"},{"key":"e_1_2_11_11_1","doi-asserted-by":"publisher","DOI":"10.1519\/JSC.0000000000002795"},{"key":"e_1_2_11_12_1","doi-asserted-by":"publisher","DOI":"10.1136\/bjsm.2010.073122"},{"key":"e_1_2_11_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/j.1550\u20108528.1995.tb00170.x"},{"key":"e_1_2_11_14_1","doi-asserted-by":"publisher","DOI":"10.3389\/fphys.2019.00088"},{"key":"e_1_2_11_15_1","doi-asserted-by":"publisher","DOI":"10.3390\/life14070892"},{"key":"e_1_2_11_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ptsp.2022.03.004"},{"key":"e_1_2_11_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ptsp.2024.01.008"},{"key":"e_1_2_11_18_1","doi-asserted-by":"publisher","DOI":"10.5114\/biolsport.2023.125585"},{"issue":"114","key":"e_1_2_11_19_1","article-title":"Monitoring the Immature Athlete","volume":"4","author":"Johnson A.","year":"2015","journal-title":"Aspetar Sports Medicine Journal"},{"key":"e_1_2_11_20_1","doi-asserted-by":"publisher","DOI":"10.1542\/peds.94.4.504"},{"key":"e_1_2_11_21_1","doi-asserted-by":"publisher","DOI":"10.3390\/biology10111128"},{"key":"e_1_2_11_22_1","first-page":"135","volume-title":"Essentials of Strength Training and Conditioning","author":"Lloyd R. S.","year":"2016"},{"key":"e_1_2_11_23_1","doi-asserted-by":"publisher","DOI":"10.1519\/JSC.0000000000000391"},{"key":"e_1_2_11_24_1","doi-asserted-by":"publisher","DOI":"10.5040\/9781492596837"},{"key":"e_1_2_11_25_1","doi-asserted-by":"publisher","DOI":"10.1519\/JSC.0000000000002800"},{"key":"e_1_2_11_26_1","doi-asserted-by":"publisher","DOI":"10.1080\/24733938.2022.2070267"},{"key":"e_1_2_11_27_1","doi-asserted-by":"publisher","DOI":"10.4172\/2324\u20109080.1000102"},{"key":"e_1_2_11_28_1","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0000000000000465"},{"key":"e_1_2_11_29_1","doi-asserted-by":"publisher","DOI":"10.3389\/fphys.2021.623126"},{"key":"e_1_2_11_30_1","doi-asserted-by":"publisher","DOI":"10.1177\/17479541241277661"},{"key":"e_1_2_11_31_1","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0000000000000783"},{"key":"e_1_2_11_32_1","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports\u20102015\u2010095362"}],"container-title":["European Journal of Sport Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ejsc.70135","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/ejsc.70135","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ejsc.70135","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T23:39:28Z","timestamp":1774568368000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/ejsc.70135"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,2,20]]},"references-count":31,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2026,3]]}},"alternative-id":["10.1002\/ejsc.70135"],"URL":"https:\/\/doi.org\/10.1002\/ejsc.70135","archive":["Portico"],"relation":{},"ISSN":["1746-1391","1536-7290"],"issn-type":[{"value":"1746-1391","type":"print"},{"value":"1536-7290","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,2,20]]},"article-number":"e70135"}}