{"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":1792759069833,"version":"4.5.0"},"reference-count":45,"publisher":"National Athletic Trainers' Association","issue":"8","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2015,8,1]]},"abstract":"<jats:sec>\n                  <jats:title>Context<\/jats:title>\n                  <jats:p>\u2003People with chronic ankle instability (CAI) exhibit less weight-bearing dorsiflexion range of motion (ROM) and less knee flexion during landing than people with stable ankles. Examining the relationship between dorsiflexion ROM and landing biomechanics may identify a modifiable factor associated with altered kinematics and kinetics during landing tasks.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Objective<\/jats:title>\n                  <jats:p>\u2003To examine the relationship between weight-bearing dorsiflexion ROM and single-legged landing biomechanics in persons with CAI.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Design<\/jats:title>\n                  <jats:p>\u2003Cross-sectional study.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Setting<\/jats:title>\n                  <jats:p>\u2003Laboratory.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Patients or Other Participants<\/jats:title>\n                  <jats:p>\u2003Fifteen physically active persons with CAI (5 men, 10 women; age = 21.9 \u00b1 2.1 years, height = 168.7 \u00b1 9.0 cm, mass = 69.4 \u00b1 13.3 kg) participated.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Intervention(s)<\/jats:title>\n                  <jats:p>\u2003Participants performed dorsiflexion ROM and single-legged landings from a 40-cm height. Sagittal-plane kinematics of the lower extremity and ground reaction forces (GRFs) were captured during landing.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Main Outcome Measure(s)<\/jats:title>\n                  <jats:p>\u2003Static dorsiflexion was measured using the weight-bearing\u2013lunge test. Kinematics of the ankle, knee, and hip were observed at initial contact, maximum angle, and sagittal displacement. Sagittal displacements of the ankle, knee, and hip were summed to examine overall sagittal displacement. Kinetic variables were maximum posterior and vertical GRFs normalized to body weight. We used Pearson product moment correlations to evaluate the relationships between dorsiflexion ROM and landing biomechanics. Correlations (r) were interpreted as weak (0.00\u20130.40), moderate (0.41\u20130.69), or strong (0.70\u20131.00). The coefficient of determination (r2) was used to determine the amount of explained variance among variables.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>\u2003Static dorsiflexion ROM was moderately correlated with maximum dorsiflexion (r = 0.49, r2 = 0.24), ankle displacement (r = 0.47, r2 = 0.22), and total displacement (r = 0.67, r2 = 0.45) during landing. Dorsiflexion ROM measured statically and during landing demonstrated moderate to strong correlations with maximum knee (r = 0.69\u20130.74, r2 = 0.47\u20130.55) and hip (r = 0.50\u20130.64, r2 = 0.25\u20130.40) flexion, hip (r = 0.53\u20130.55, r2 = 0.28\u20130.30) and knee (r = 0.53\u20130.70, r2 = 0.28\u20130.49) displacement, and vertical GRF (\u22120.47\u2013 \u22120.50, r2 = 0.22\u20130.25).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>\u2003Dorsiflexion ROM was moderately to strongly related to sagittal-plane kinematics and maximum vertical GRF during single-legged landing in persons with CAI. Persons with less dorsiflexion ROM demonstrated a more erect landing posture and greater GRF.<\/jats:p>\n               <\/jats:sec>","DOI":"10.4085\/1062-6050-50.5.07","type":"journal-article","created":{"date-parts":[[2015,6,11]],"date-time":"2015-06-11T15:02:30Z","timestamp":1434034950000},"page":"833-839","source":"Crossref","is-referenced-by-count":105,"title":["Weight-Bearing Dorsiflexion Range of Motion and Landing Biomechanics in Individuals With Chronic Ankle Instability"],"prefix":"10.4085","volume":"50","author":[{"given":"Matthew C.","family":"Hoch","sequence":"first","affiliation":[{"name":"Old Dominion University, Norfolk, VA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kelley E.","family":"Farwell","sequence":"first","affiliation":[{"name":"Old Dominion University, Norfolk, VA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stacey L.","family":"Gaven","sequence":"first","affiliation":[{"name":"Franklin College, 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