{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T13:20:17Z","timestamp":1791465617467,"version":"4.3.4"},"reference-count":44,"publisher":"National Athletic Trainers' Association","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2015,4,1]]},"abstract":"<jats:sec>\n                  <jats:title>Context<\/jats:title>\n                  <jats:p>Chronic ankle instability (CAI) occurs in some people after a lateral ankle sprain and often results in residual feelings of instability and episodes of the ankle's giving way. Compared with healthy people, patients with CAI demonstrated poor postural control and used a more anteriorly and laterally positioned center of pressure (COP) during a single-limb static-balance task on a force plate. Balance training is an effective means of altering traditional COP measures; however, whether the overall location of the COP distribution under the foot also changes is unknown.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Objective<\/jats:title>\n                  <jats:p>To determine if the spatial locations of COP data points in participants with CAI change after a 4-week balance-training program.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Design<\/jats:title>\n                  <jats:p>Randomized controlled trial.<\/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>Thirty-one persons with self-reported CAI.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Intervention(s)<\/jats:title>\n                  <jats:p>Participants were randomly assigned to a 4-week balance-training program or no balance training.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Main Outcome Measure(s)<\/jats:title>\n                  <jats:p>We collected a total of 500 COP data points while participants balanced using a single limb on a force plate during a 10-second trial. The location of each COP data point relative to the geometric center of the foot was determined, and the frequency count in 4 sections (anteromedial, anterolateral, posteromedial, posterolateral) was analyzed for differences between groups.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>Overall, COP position in the balance-training group shifted from being more anterior to less anterior in both eyes-open trials (before trial = 319.1 \u00b1 165.4, after trial = 160.5 \u00b1 149.5; P = .006) and eyes-closed trials (before trial = 387.9 \u00b1 123.8, after trial = 189.4 \u00b1 102.9; P &amp;lt; .001). The COP for the group that did not perform balance training remained the same in the eyes-open trials (before trial = 214.1 \u00b1 193.3, after trial = 230.0 \u00b1 176.3; P = .54) and eyes-closed trials (before trial = 326.9 \u00b1 134.3, after trial = 338.2 \u00b1 126.1; P = .69).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>In participants with CAI, the balance-training program shifted the COP location from anterolateral to posterolateral. The program may have repaired some of the damaged sensorimotor system pathways, resulting in a more optimally functioning and less constrained system.<\/jats:p>\n               <\/jats:sec>","DOI":"10.4085\/1062-6050-49.3.94","type":"journal-article","created":{"date-parts":[[2015,1,6]],"date-time":"2015-01-06T18:26:03Z","timestamp":1420568763000},"page":"343-349","source":"Crossref","is-referenced-by-count":61,"title":["Balance Training and Center-of-Pressure Location in Participants With Chronic Ankle Instability"],"prefix":"10.4085","volume":"50","author":[{"given":"Abby","family":"Mettler","sequence":"first","affiliation":[{"name":"University of Virginia, Charlottesville"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lisa","family":"Chinn","sequence":"first","affiliation":[{"name":"Kent State University, OH"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Susan A.","family":"Saliba","sequence":"first","affiliation":[{"name":"University of Virginia, Charlottesville"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patrick O.","family":"McKeon","sequence":"first","affiliation":[{"name":"Ithaca College, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jay","family":"Hertel","sequence":"first","affiliation":[{"name":"University of Virginia, Charlottesville"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2557","reference":[{"issue":"13","key":"2020060411222303100_i1062-6050-50-4-343-b01","doi-asserted-by":"crossref","first-page":"2279","DOI":"10.2106\/JBJS.I.01537","article-title":"The epidemiology of ankle sprains in the United States","volume":"92","author":"Waterman","year":"2010","journal-title":"J Bone Joint Surg Am"},{"issue":"4","key":"2020060411222303100_i1062-6050-50-4-343-b02","doi-asserted-by":"crossref","first-page":"797","DOI":"10.1177\/0363546509350757","article-title":"Epidemiology of ankle sprain at the United States Military Academy","volume":"38","author":"Waterman","year":"2010","journal-title":"Am J Sports Med"},{"issue":"2","key":"2020060411222303100_i1062-6050-50-4-343-b03","first-page":"311","article-title":"Epidemiology of collegiate injuries for 15 sports: summary and recommendations for injury prevention initiatives","volume":"42","author":"Hootman","year":"2007","journal-title":"J Athl Train"},{"issue":"7","key":"2020060411222303100_i1062-6050-50-4-343-b04","doi-asserted-by":"crossref","first-page":"641","DOI":"10.1197\/j.aem.2007.03.1354","article-title":"Epidemiology of lower extremity injuries among U.S. high school athletes","volume":"14","author":"Fernandez","year":"2007","journal-title":"Acad Emerg Med"},{"issue":"4","key":"2020060411222303100_i1062-6050-50-4-343-b05","doi-asserted-by":"crossref","first-page":"324","DOI":"10.1016\/j.amjmed.2007.11.018","article-title":"What is the clinical course of acute ankle sprains? 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