{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T13:48:35Z","timestamp":1785851315418,"version":"3.56.0"},"reference-count":90,"publisher":"Human Kinetics","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,4,1]]},"abstract":"<jats:p>The purpose of the present study was to examine the effect of chronic ankle instability (CAI) on lower-extremity joint coordination and stiffness during landing. A total of 21 female participants with CAI and 21 pair-matched healthy controls participated in the study. Lower-extremity joint kinematics were collected using a 7-camera motion capture system, and ground reaction forces were collected using 2 force plates during drop landings. Coupling angles were computed based on the vector coding method to assess joint coordination. Coupling angles were compared between the CAI and control groups using circular Watson\u2013Williams tests. Joint stiffness was compared between the groups using independent <jats:italic>t<\/jats:italic> tests. Participants with CAI exhibited strategies involving altered joint coordination including a knee flexion dominant pattern during 30% and 70% of their landing phase and a more in-phase motion pattern between the knee and hip joints during 30% and 40% and 90% and 100% of the landing phase. In addition, increased ankle inversion and knee flexion stiffness were observed in the CAI group. These altered joint coordination and stiffness could be considered as a protective strategy utilized to effectively absorb energy, stabilize the body and ankle, and prevent excessive ankle inversion. However, this strategy could result in greater mechanical demands on the knee joint.<\/jats:p>","DOI":"10.1123\/jab.2020-0272","type":"journal-article","created":{"date-parts":[[2021,1,15]],"date-time":"2021-01-15T16:51:38Z","timestamp":1610729498000},"page":"156-162","source":"Crossref","is-referenced-by-count":11,"title":["Joint Coordination and Stiffness During Landing in Individuals With Chronic Ankle Instability"],"prefix":"10.1123","volume":"37","author":[{"given":"Yumeng","family":"Li","sequence":"first","affiliation":[{"name":"1Texas State University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jupil","family":"Ko","sequence":"additional","affiliation":[{"name":"2Incheon National University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marika A.","family":"Walker","sequence":"additional","affiliation":[{"name":"3University of Georgia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cathleen 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