{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,24]],"date-time":"2026-10-24T11:37:44Z","timestamp":1792841864316,"version":"4.5.0"},"reference-count":36,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T00:00:00Z","timestamp":1782172800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Back and Musculoskeletal Rehabilitation"],"published-print":{"date-parts":[[2026,11]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Recurrent hamstring strain injuries are associated with deficits in eccentric strength and altered muscle-tendon extensibility, which may persist and contribute to reinjury risk.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To examine the relationship between hamstring flexibility, assessed by Askling H-test, and isokinetic strength ratios; concentric-to-eccentric (Con:Ecc) and hamstring-to-quadriceps (H:Q) in elite soccer players with previous hamstring strain.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Fifty-two male professional players (27\u2009\u00b1\u20095 years) with clinically confirmed prior hamstring injury completed the Askling H-test and bilateral isokinetic testing at 60\u00b0\u00b7s\u207b\n                      <jats:sup>1<\/jats:sup>\n                      (concentric) and 180\u00b0\u00b7s\u207b\n                      <jats:sup>1<\/jats:sup>\n                      (eccentric). The mean of three maximal efforts was used to calculate peak torques. Pearson correlations and multiple linear regression examined the relationship between flexibility, age, and strength ratios (\u03b1\u2009=\u20090.05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Mean \u00b1 SD Con:Ecc ratio was 86\u2009\u00b1\u20099% and H:Q ratio 63\u2009\u00b1\u20097%. Hamstring flexibility correlated inversely with the Con:Ecc ratio, moderately in the dominant limb (\n                      <jats:italic toggle=\"yes\">r<\/jats:italic>\n                      \u2009=\u2009-0.65 [95% CI \u22120.78 to \u22120.46],\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009&lt;\u20090.001) and weakly in the non-dominant limb (\n                      <jats:italic toggle=\"yes\">r<\/jats:italic>\n                      \u2009=\u2009\u20130.34 [95% CI \u22120.56 to \u22120.06],\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009=\u20090.02). No significant correlation was observed between flexibility and the H:Q ratio (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009=\u20090.38). Flexibility remained an independent predictor of the Con:Ecc ratio after adjusting for age (\u03b2\u2009=\u2009\u20130.61, p\u2009&lt;\u20090.001; R\n                      <jats:sup>2<\/jats:sup>\n                      \u2009=\u20090.38).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Reduced hamstring flexibility is associated with a higher Con:Ecc ratio, indicating relatively reduced eccentric capacity, but is not related to H:Q balance. These findings highlight the role of flexibility in hamstring strength balance and warrant longitudinal investigation.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/10538127261462651","type":"journal-article","created":{"date-parts":[[2026,6,24]],"date-time":"2026-06-24T05:30:13Z","timestamp":1782279013000},"page":"2077-2087","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Relationship between hamstring flexibility (askling H-test) and isokinetic strength ratios in elite soccer players with prior hamstring strain injury: A cross-sectional study"],"prefix":"10.1177","volume":"39","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7364-4665","authenticated-orcid":false,"given":"Mary Kamal Nassif","family":"Takla","sequence":"first","affiliation":[{"name":"Faculty of Physical Therapy, Department of Basic Sciences, Cairo University, Ad Doqi, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mai Raouf Mohamed","family":"Rageh","sequence":"additional","affiliation":[{"name":"Faculty of Physical Therapy, Department of Basic Sciences, Cairo University, Ad Doqi, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohamed Aboalata Mohamed","family":"Aboalata","sequence":"additional","affiliation":[{"name":"Faculty of Medicine, Department of Orthopedic Surgery, Mansoura University, Mansoura, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elsaieed Ahmed","family":"Attia","sequence":"additional","affiliation":[{"name":"Faculty of Physical Therapy, Department of Basic Sciences, Cairo University, Ad Doqi, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2026,6,23]]},"reference":[{"key":"e_1_3_4_2_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546510395879"},{"key":"e_1_3_4_3_2","first-page":"272","article-title":"Effects of prior hamstring strain injury on strength, flexibility, and running mechanics","volume":"55","author":"Silder A","year":"2020","unstructured":"Silder A, Thelen DG, Heiderscheit BC. 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