{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T12:38:20Z","timestamp":1777466300655,"version":"3.51.4"},"reference-count":30,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2025,3,23]],"date-time":"2025-03-23T00:00:00Z","timestamp":1742688000000},"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":[[2025,7]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Anterior cruciate ligament (ACL) reconstruction typically requires a hamstring-to-quadriceps muscle strength ratio (H\/Q ratio) of at least 55% for safe return to sports, as measured via isokinetic dynamometry. The single-leg standing-up (SLS) test is sometimes used to assess lower extremity strength. Establishing SLS as a return-to-sport criterion may provide a clinically accessible alternative.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>This study aimed to evaluate whether SLS performance could serve as an alternative return-to-sports criterion.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Eighty-five patients who underwent ACL reconstruction were enrolled in this study. Knee extension and flexion strengths were assessed to calculate the H\/Q ratio. SLS was initiated at a height of 30\u2005cm, with the height reduced by 10\u2005cm per attempt until success. The participants were categorized according to their maximum height and knee strengths, and H\/Q ratios were compared.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Knee extension strength did not vary significantly across the groups; however, knee flexion strength and H\/Q ratio showed notable differences. The participants who completed SLS from 20\u2005cm demonstrated an H\/Q ratio of 55% or higher, meeting the threshold for sports resumption.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>These results indicate that achieving SLS from a 20\u2005cm height may be a feasible criterion to assess readiness for sports resumption after ACL reconstruction.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/10538127251314027","type":"journal-article","created":{"date-parts":[[2025,3,24]],"date-time":"2025-03-24T02:53:26Z","timestamp":1742784806000},"page":"739-744","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Investigation of return-to-sport criteria based on the results of the single-leg standing-up test"],"prefix":"10.1177","volume":"38","author":[{"given":"Koichi","family":"Kamiike","sequence":"first","affiliation":[{"name":"Department of Rehabilitation, Hosogi Hospital, Kochi, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5316-8750","authenticated-orcid":false,"given":"Akira","family":"Sakaguchi","sequence":"additional","affiliation":[{"name":"School of Rehabilitation, Hyogo Medical University, Kobe-city, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rui","family":"Tsukagoshi","sequence":"additional","affiliation":[{"name":"School of Rehabilitation, Hyogo Medical University, Kobe-city, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-8357-6717","authenticated-orcid":false,"given":"Masami","family":"Hidaka","sequence":"additional","affiliation":[{"name":"School of Rehabilitation, Hyogo Medical University, Kobe-city, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kotaro","family":"Kawaguchi","sequence":"additional","affiliation":[{"name":"School of Rehabilitation, Hyogo Medical University, Kobe-city, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,3,23]]},"reference":[{"key":"e_1_3_4_2_2","doi-asserted-by":"publisher","DOI":"10.1055\/s-0030-1247719"},{"key":"e_1_3_4_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00402-013-1746-1"},{"key":"e_1_3_4_4_2","doi-asserted-by":"publisher","DOI":"10.1177\/036354659602400405"},{"key":"e_1_3_4_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jsams.2007.04.009"},{"key":"e_1_3_4_6_2","doi-asserted-by":"publisher","DOI":"10.1080\/02701367.2012.10599844"},{"key":"e_1_3_4_7_2","volume-title":"Compendium of isokinetics in clinical usage","author":"Davies G","year":"1992","unstructured":"Davies G. 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Evaluation of the muscular strength of the lower extremities using the standing movement and clinical application. J Showa Med Assoc 2001; 61: 362\u2013367. (in Japanese).","journal-title":"J Showa Med Assoc"},{"key":"e_1_3_4_19_2","doi-asserted-by":"publisher","DOI":"10.26603\/ijspt20200388"},{"key":"e_1_3_4_20_2","first-page":"13","article-title":"Electromyographic analysis of single-leg, closed chain exercises: implications for rehabilitation after anterior cruciate ligament reconstruction","volume":"37","author":"Beutler AI","year":"2002","unstructured":"Beutler AI, Cooper LW, Kirkendall DT, et al. Electromyographic analysis of single-leg, closed chain exercises: implications for rehabilitation after anterior cruciate ligament reconstruction. 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