TAILIEUCHUNG - Identification of healthy elderly fallers and non-fallers by gait analysis under dual-task conditions

The groups also differed in their response distributions. The younger subjects spread out their responses across the confidence levels: half of their selections were evenly distributed among the intermediate confidence levels. In the older subjects, the majority of the responses were given with either 100% or 50% confidence (in calibration terms, their assessments had “higher resolution”). While older subjects reported a confidence of 100% significantly more often than the younger subjects (p. | Clinical Rehabilitation 2006 20 269-276 Identification of healthy elderly fallers and non-fallers by gait analysis under dual-task conditions C Toulotte Laboratoire d Etudes de la Motricite Humaine Faculte des Sciences du Sport et de l Education Physique Lille and Laboratoire d Analyse du Mouvement Hopital Roger Salengro Lille A Thevenon Hopital Swinghedauw Service de Reeducation et de Readaptation Fonctionnelles Lille E Watelain Laboratoire d Automatique de Mecanique et d Informatique industrielles et Humaines Universite de Valenciennes Valenciennes and C Fabre Laboratoire d Etudes de la Motricite Humaine Faculte des Sciences du Sport et de l Education Physique Lille France Received 22nd October 2004 returned for revisions 11th April 2005 revised manuscript accepted 29th July 2005. Objective We compared falling and non-falling healthy elderly subjects to identify balance disorders associated with falling. Gait parameters were determined when carrying out single and dual tasks. Design Case comparison study. Setting Subjects were studied in the gait laboratory at Hopital Roger Salengro Lille France. Subjects A group of 40 healthy elderly women were assigned to one of two groups according to their falling history 21 fallers aged years and 19 non-fallers aged years. All subjects performed first a single leg balance test with two conditions eyes open closed . Then gait parameters were analysed under singletask and dual motor-task conditions walking with a glass of water in the hand . Main measures Falls number of times suspended foot touched the floor during the single leg balance test cadence speed stride time step time single-support time stride length and step length during walking under single- and dual-task conditions. Results During the single leg balance test fallers placed their feet on the floor three times more often than non-fallers under eyes open conditions P and twice as often under eyes closed conditions P . In the single-task

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