{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,18]],"date-time":"2026-06-18T03:39:10Z","timestamp":1781753950748,"version":"3.54.5"},"reference-count":48,"publisher":"National Athletic Trainers' Association","issue":"11","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2017,11,1]]},"abstract":"<jats:sec>\n                  <jats:title>Context:\u2003<\/jats:title>\n                  <jats:p>Researchers have reported increased variability in frontal-plane movement at the ankle during jumping in individuals with chronic ankle instability (CAI), which may increase their risk of recurrent ankle sprain. It is not known if this behavior is present during running gait or how fatigue affects the amount of frontal-plane\u2013movement variability in individuals with CAI.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Objective:\u2003<\/jats:title>\n                  <jats:p>To investigate the amount of roll-angle variability at the foot during a fatiguing exercise protocol in participants with CAI.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Design:\u2003<\/jats:title>\n                  <jats:p>Controlled laboratory study.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Setting:\u2003<\/jats:title>\n                  <jats:p>Motion-analysis research laboratory.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Patients or Other Participants:\u2003<\/jats:title>\n                  <jats:p>A total of 18 volunteers with CAI (10 men, 8 women; age = 29.8 \u00b1 9.2 years, height = 175.8 \u00b1 11.2 cm, mass = 75.4 \u00b1 10.7 kg) and 17 volunteers serving as controls (8 men, 9 women; age = 28.2 \u00b1 6.3 years, height = 172.3 \u00b1 10.6 cm, mass = 68.8 \u00b1 12.9 kg).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Intervention(s):\u2003<\/jats:title>\n                  <jats:p>Kinematic data for foot position were collected while participants performed a functional fatigue protocol based on shuttle runs.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Main Outcome Measure(s):\u2003<\/jats:title>\n                  <jats:p>Variability (ie, standard deviation) of the roll angle of the foot about the x-axis, corresponding to inversion-eversion, was measured at 2 discrete times: 50 milliseconds before foot strike and 65% of stance.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results:\u2003<\/jats:title>\n                  <jats:p>No differences in roll-angle range or variability were observed between limbs in either group. At 65% of stance, we found a main effect for time, whereby both groups demonstrated decreased roll-angle ranges at the end of the fatigue protocol (P = .01). A between-groups effect in the roll-angle variability at 65% of stance was noted (P = .04), with the CAI group exhibiting higher levels of variability. No between-groups differences were observed at 50 milliseconds before foot strike.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions:\u2003<\/jats:title>\n                  <jats:p>Chronic ankle instability is a complex, multifactorial condition that can affect patients in diverse ways. Identifying excessive foot-position variability in particular situations could potentially inform targeted rehabilitation programs.<\/jats:p>\n               <\/jats:sec>","DOI":"10.4085\/1062-6050-52.11.20","type":"journal-article","created":{"date-parts":[[2017,11,8]],"date-time":"2017-11-08T20:10:23Z","timestamp":1510171823000},"page":"1019-1027","source":"Crossref","is-referenced-by-count":13,"title":["Frontal-Plane Variability in Foot Orientation During Fatiguing Running Exercise in Individuals With Chronic Ankle Instability"],"prefix":"10.4085","volume":"52","author":[{"given":"Denise","family":"McGrath","sequence":"first","affiliation":[{"name":"School of Public Health, Physiotherapy and Sports Science, University College Dublin, Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthew","family":"Patterson","sequence":"first","affiliation":[{"name":"The Insight Centre for Data Analytics, University College Dublin, Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ulrik McCarthy","family":"Persson","sequence":"first","affiliation":[{"name":"School of Public Health, Physiotherapy and Sports Science, University College Dublin, Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brian","family":"Caulfield","sequence":"first","affiliation":[{"name":"The Insight Centre for Data Analytics, University College Dublin, Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2557","reference":[{"issue":"3","key":"2020060411395565500_i1062-6050-52-11-1019-b01","doi-asserted-by":"crossref","first-page":"353","DOI":"10.1016\/j.csm.2008.03.006","article-title":"Sensorimotor deficits with ankle sprains and chronic ankle instability","volume":"27","author":"Hertel","year":"2008","journal-title":"Clin Sports Med"},{"issue":"2","key":"2020060411395565500_i1062-6050-52-11-1019-b02","doi-asserted-by":"crossref","first-page":"168","DOI":"10.1016\/j.clinbiomech.2005.09.004","article-title":"Ankle function during gait in patients with chronic ankle instability compared to controls","volume":"21","author":"Monaghan","year":"2006","journal-title":"Clin Biomech (Bristol, Avon)"},{"issue":"12","key":"2020060411395565500_i1062-6050-52-11-1019-b03","doi-asserted-by":"crossref","first-page":"1970","DOI":"10.1177\/0363546506290989","article-title":"Altered neuromuscular control and ankle joint kinematics during walking in subjects with functional instability of the ankle joint","volume":"34","author":"Delahunt","year":"2006","journal-title":"Am J Sports Med"},{"issue":"4","key":"2020060411395565500_i1062-6050-52-11-1019-b04","doi-asserted-by":"crossref","first-page":"232","DOI":"10.1016\/j.ptsp.2012.10.001","article-title":"Ankle kinematics of individuals with chronic ankle instability while walking and jogging on a treadmill in shoes","volume":"14","author":"Chinn","year":"2014","journal-title":"Phys Ther Sport"},{"issue":"3","key":"2020060411395565500_i1062-6050-52-11-1019-b05","doi-asserted-by":"crossref","first-page":"375","DOI":"10.1123\/jsr.18.3.375","article-title":"Altered ankle kinematics and shank-rear-foot coupling in those with chronic ankle instability","volume":"18","author":"Drewes","year":"2009","journal-title":"J Sport Rehabil"},{"issue":"11","key":"2020060411395565500_i1062-6050-52-11-1019-b06","doi-asserted-by":"crossref","first-page":"994","DOI":"10.3113\/FAI.2010.0994","article-title":"Plantar pressure during running in subjects with chronic ankle instability","volume":"31","author":"Morrison","year":"2010","journal-title":"Foot Ankle Int"},{"issue":"6","key":"2020060411395565500_i1062-6050-52-11-1019-b07","doi-asserted-by":"crossref","first-page":"e461","DOI":"10.1111\/j.1600-0838.2011.01367.x","article-title":"Foot pressure and center of pressure in athletes with ankle instability during lateral shuffling and running gait","volume":"21","author":"Huang","year":"2011","journal-title":"Scand J Med Sci Sports"},{"issue":"1","key":"2020060411395565500_i1062-6050-52-11-1019-b08","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1136\/bjsm.35.1.43","article-title":"The association football medical research programme: an audit of injuries in professional football","volume":"35","author":"Hawkins","year":"2001","journal-title":"Br J Sports Med"},{"issue":"5","key":"2020060411395565500_i1062-6050-52-11-1019-b09","doi-asserted-by":"crossref","first-page":"279","DOI":"10.1034\/j.1600-0838.2000.010005279.x","article-title":"Injury risk factors in female European football: a prospective study of 123 players during one season","volume":"10","author":"Ostenberg","year":"2000","journal-title":"Scand J Med Sci Sports"},{"issue":"3","key":"2020060411395565500_i1062-6050-52-11-1019-b10","doi-asserted-by":"crossref","first-page":"233","DOI":"10.1136\/bjsm.37.3.233","article-title":"The Football Association Medical Research Programme: an audit of injuries in professional football. 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