{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,9]],"date-time":"2026-01-09T19:20:49Z","timestamp":1767986449869,"version":"3.49.0"},"reference-count":40,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2020,3,20]],"date-time":"2020-03-20T00:00:00Z","timestamp":1584662400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Haemophilia"],"published-print":{"date-parts":[[2020,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>People with haemophilic arthropathy (PWHA) have impairments in postural control. However, little is known about the effects of demanding conditions, including the unipedal stance and dual tasks, on postural control in PWHA.<\/jats:p><\/jats:sec><jats:sec><jats:title>Aim<\/jats:title><jats:p>Determine the effects of performing dual tasks while in the one\u2010leg stance on postural sway and postural control complexity in PWHA vs. healthy active (HAG) and non\u2010active (HNAG) groups of individuals.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Fifteen PWHA and 34 healthy subjects (18 active and 16 non\u2010active) were recruited. Vertical (V), mediolateral (ML) and anteroposterior (AP) centre of mass signals were acquired using a 3\u2010axis accelerometer placed at the L3\/L4 vertebrae of subjects as they performed the one\u2010leg stance under single and dual\u2010task conditions. Sway balance and the complexity of postural control were studied via root mean square (RMS) acceleration and sample entropy, respectively. Increased complexity of postural sway was attributed to increased automatism of postural control.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>RMS values for PWHA were higher than HAG under both conditions for the V and ML axes, and higher than HNAG under the dual\u2010task condition for the ML axis. Sample entropy was lower in PWHA than healthy individuals under the dual\u2010task condition for V and ML axes, and the single\u2010task condition for the ML axis (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a0.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>PWHA had poorer postural sway and decreased postural control complexity when performing a one\u2010leg stance than healthy people, especially when the dual\u2010task condition was applied. These results may help to design new approaches to assess and improve postural control in PWHA.<\/jats:p><\/jats:sec>","DOI":"10.1111\/hae.13955","type":"journal-article","created":{"date-parts":[[2020,3,20]],"date-time":"2020-03-20T21:18:54Z","timestamp":1584739134000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Effects of performing dual tasks on postural sway and postural control complexity in people with haemophilic arthropathy"],"prefix":"10.1111","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3835-3368","authenticated-orcid":false,"given":"Carlos","family":"Cruz\u2010Montecinos","sequence":"first","affiliation":[{"name":"Laboratory of Clinical Biomechanics Department of Physical Therapy Faculty of Medicine University of Chile Santiago Chile"},{"name":"Physiotherapy in Motion Multispeciality Research Group (PTinMOTION) Department of Physiotherapy University of Valencia Valencia Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0740-3772","authenticated-orcid":false,"given":"Juan J.","family":"Carrasco","sequence":"additional","affiliation":[{"name":"Physiotherapy in Motion Multispeciality Research Group (PTinMOTION) Department of Physiotherapy University of Valencia Valencia Spain"},{"name":"Intelligent Data Analysis Laboratory University of Valencia Valencia Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5119-5106","authenticated-orcid":false,"given":"Benjam\u00edn","family":"Guzm\u00e1n-Gonz\u00e1lez","sequence":"additional","affiliation":[{"name":"Laboratory of Clinical Biomechanics Department of Physical Therapy Faculty of Medicine University of Chile Santiago 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