{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,26]],"date-time":"2026-04-26T17:08:31Z","timestamp":1777223311084,"version":"3.51.4"},"reference-count":25,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2021,5,11]],"date-time":"2021-05-11T00:00:00Z","timestamp":1620691200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100011289","name":"International Society of Biomechanics","doi-asserted-by":"publisher","award":["Matching Dissertation Grant"],"award-info":[{"award-number":["Matching Dissertation Grant"]}],"id":[{"id":"10.13039\/100011289","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal Orthopaedic Research"],"published-print":{"date-parts":[[2022,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Underloading the surgical limb has been described in biomechanical studies across recovery time points following anterior cruciate ligament reconstruction (ACLr). This study aimed to examine the extent to which laboratory findings translate to daily activities. Limb loading was quantified during a sit\u2010to\u2010stand task in laboratory testing and throughout 2 days of daily activity in 15 individuals 114.8 (17.2) days post\u2010ACLr and 15 controls. Vertical force impulse calculated from force platform (laboratory) and pressure insoles (daily) was used to quantify limb loading. Between\u2010limb symmetry was calculated for limb loading and knee strength measures, 2\u2009\u00d7\u20092 GLM repeated measures determined a significant group\u2010by\u2010limb interaction on daily limb loading. Surgical limb daily loading was lower compared to nonsurgical (<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001; effect sizes [ES]\u2009=\u20090.63), and control matched limbs (surgical: <jats:italic>p<\/jats:italic>\u2009=\u2009.037, ES\u2009=\u20090.80 and nonsurgical: <jats:italic>p<\/jats:italic>\u2009=\u2009.02, ES\u2009=\u20090.89). No group differences were found in total daily loading (summed loading between limbs; <jats:italic>p<\/jats:italic>\u2009=\u2009.18; ES\u2009=\u20090.50) and time performing weight\u2010bearing activities (<jats:italic>p<\/jats:italic>\u2009=\u2009.32; ES\u2009=\u20090.36). Pearson's correlation determined that between\u2010limb symmetry in daily loading was related to sit\u2010to\u2010stand loading (<jats:italic>r<\/jats:italic>\u2009=\u2009.62; <jats:italic>p<\/jats:italic>\u2009=\u2009.01) and knee extensor strength symmetry (<jats:italic>r<\/jats:italic>\u2009=\u2009.6; <jats:italic>p<\/jats:italic>\u2009=\u2009.02) in the ACLr group. These data support the presence of underloading behaviors in individuals 10\u201314 weeks following ACLr that are consistent with previous biomechanical studies and current biomechanical data. Knee extensor weakness was related to greater underloading. Asymmetrical loading quantified in the laboratory is practiced throughout the day in individuals post\u2010ACLr. Practice afforded by daily activities represents powerful contributors to learning of a pattern that contrasts the goal of rehabilitation exercises.<\/jats:p>","DOI":"10.1002\/jor.25070","type":"journal-article","created":{"date-parts":[[2021,4,29]],"date-time":"2021-04-29T10:55:29Z","timestamp":1619693729000},"page":"565-572","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Individuals following anterior cruciate ligament reconstruction practice underloading strategies during daily activity"],"prefix":"10.1002","volume":"40","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6019-9136","authenticated-orcid":false,"given":"Ming\u2010Sheng","family":"Chan","sequence":"first","affiliation":[{"name":"Meyer Institute of Sport  Los Angeles California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Susan M.","family":"Sigward","sequence":"additional","affiliation":[{"name":"Human Performance Laboratory, Division of Biokinesiology and Physical Therapy University of Southern California  Los Angeles California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,5,11]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.2519\/jospt.2018.7977"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0000000000001956"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1186\/1743-0003-11-19"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1097\/PHM.0000000000000369"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbiomech.2011.04.037"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.2519\/jospt.2011.3591"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1097\/JSM.0b013e31804c77ea"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/jor.23408"},{"issue":"5","key":"e_1_2_8_10_1","first-page":"327","article-title":"Understanding, detecting, and managing the risk of posttraumatic osteoarthritis following anterior 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