{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T12:37:49Z","timestamp":1792759069877,"version":"4.5.0"},"reference-count":29,"publisher":"National Athletic Trainers' Association","issue":"11-12","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,11,1]]},"abstract":"<jats:sec>\n                  <jats:title>Context<\/jats:title>\n                  <jats:p>Participants with chronic ankle instability (CAI) frequently display altered movement patterns during functional movements. However, it remains unclear how these altered joint kinematics during jump landing negatively affect ankle joint health in the CAI population. Calculating joint energetics may offer an important method to estimate the magnitude of lower extremity joint loading during functional movements in participants with CAI.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Objective<\/jats:title>\n                  <jats:p>To determine differences in energy dissipation and generation by the lower extremity during maximal jump landing and cutting among groups with CAI, copers, and controls.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Design<\/jats:title>\n                  <jats:p>Cross-sectional study.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Setting<\/jats:title>\n                  <jats:p>Laboratory.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Patients or Other Participants<\/jats:title>\n                  <jats:p>Forty-four participants with CAI, 44 copers, and 44 controls.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Main Outcome Measures(s)<\/jats:title>\n                  <jats:p>Kinematics and kinetics of the lower extremity and ground reaction force data were collected during a maximal jump-landing and cutting task. The product of angular velocity in the sagittal plane and joint moment data represented joint power. Energy dissipation and generation by the ankle, knee, and hip joints were calculated by integrating regions of the joint power curve.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>Participants with CAI displayed reduced ankle energy dissipation (35.9% \u00b1 10.1%) and generation (31.6% \u00b1 12.8%; P &amp;lt; .01) compared with copers (dissipation = 43.6% \u00b1 11.1%; generation = 40.4% \u00b1 12.0%) and controls (dissipation = 41.3% \u00b1 11.1%; generation = 39.6% \u00b1 12.0%) during maximal jump landing and cutting. Participants with CAI also displayed greater energy dissipation at the knee (45.1% \u00b1 9.1%) than copers (39.7% \u00b1 9.5%) during the loading phase and greater energy generation at the hip than controls (36.6% \u00b1 16.8% versus 28.3% \u00b1 12.8%) during the cutting phase. However, copers displayed no differences in joint energetics compared with controls.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>Participants with CAI displayed differences in both energy dissipation and generation by the lower extremity during maximal jump landing and cutting. However, copers did not show altered joint energetics, which may represent a coping mechanism to avoid further injuries.<\/jats:p>\n               <\/jats:sec>","DOI":"10.4085\/1062-6050-0452.22","type":"journal-article","created":{"date-parts":[[2023,3,13]],"date-time":"2023-03-13T19:42:26Z","timestamp":1678736546000},"page":"912-919","source":"Crossref","is-referenced-by-count":8,"title":["Lower Extremity Energy Dissipation and Generation During Jump Landing and Cutting in Patients With Chronic Ankle Instability"],"prefix":"10.4085","volume":"58","author":[{"given":"Seunguk","family":"Han","sequence":"first","affiliation":[{"name":"Brigham Young University, Provo, UT"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyunwook","family":"Lee","sequence":"additional","affiliation":[{"name":"Brigham Young University, Provo, UT"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Minsub","family":"Oh","sequence":"additional","affiliation":[{"name":"Brigham Young University, Provo, UT"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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