A spatio-temporal and kinematic description of self-selected walking in adults with Achondroplasia |
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| Affiliation: | 1. Department for Trauma and Reconstructive Surgery, University Hospital RWTH Aachen, Aachen, Germany.;2. Department of Orthopaedic Surgery, University Hospital RWTH Aachen, Aachen, Germany;3. Department of Diagnostic and Interventional Radiology, University Hospital RWTH Aachen, Aachen, Germany;1. Institute for Health and Sport (iHeS), Victoria University, Melbourne, Australia;2. Department of Biomedical Engineering, Columbia University, New York, NY, United States;3. Department of Physics, Washington & Jefferson College, Washington, PA, United States;4. Bolton Clarke Research Institute, Melbourne, Australia;1. MS Service, NHS Ayrshire and Arran, Scotland, UK;2. School of Health and Life Sciences, Glasgow Caledonian University, Glasgow, UK;1. Institute of Sports Science, Friedrich Schiller University of Jena, Jena, Germany;2. Department of Sport and Movement Science, Institute of Sport Science, Carl von Ossietzky University of Oldenburg, Oldenburg, Germany;3. Department for Exercise & Health, Institute of Sport Science, Leibniz University Hannover, Hannover, Germany;1. Department of Physical Therapy/Motion Analysis Center, Central Michigan University, United States;2. Department of Health Sciences, Central Michigan University,United States;1. Aix-Marseille Université, CNRS, Laboratoire de Neurosciences Cognitives, FR 3C, Marseille, France;2. Aix-Marseille Université, CNRS, Institut des Sciences du Mouvement, Marseille, France;3. Equilibre Hôpital de jour, Clinique Saint-Christophe, Chemin de St Hilaire, 13320, Bouc-Bel-Air, France;4. Aix Marseille Université, LPS, Aix-en-Provence, France;5. APHM, Timone, Service d’Oncologie Médicale, Marseille, France |
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| Abstract: | BackgroundAchondroplasia is characterised by a shorter appendicular limb to torso ratio, compared to age matched individuals of average stature (controls). Despite the well documented shorter leg length of individuals with compared to controls, there are few complete descriptions of gait kinematics reported for the population.AimThe aim of this study was to report the spatio-temporal and kinematic characteristics of self-selected walking (SSW) in a group with Achondroplasia (N = 10) and age matched group without Achondroplasia (controls, N = 17).MethodWhole body 3D analysis of both groups was conducted using a 14 camera VICON system. Spatio-temporal and kinematic variables were determined through a Plug-in-Gait model. SSW was obtained from an average of three trials equating to a total of ∼120 m walking.ResultsThe group with Achondroplasia were 23 % slower (P < 0.001), had a 29 % shorter stride length (P < 0.001) and a 13 % higher stride frequency (P < 0.001) compared to controls. There were no differences in time normalised temporal measures of left toe off (P = 0.365), right heel contact (P = 0.442) or the duration of double support (P = 0.588) between groups. A number of discrete joint kinematic differences existed between groups, resulting in the group with Achondroplasia having more ‘flexed’ lower limbs than controls throughout the gait cycle.ConclusionDifferences in absolute spatio-temporal variables between groups is likely due to the shorter leg length of the group with Achondroplasia, while their more flexed position of the lower limbs may facilitate toe-clearance during the swing phase. |
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| Keywords: | Achondroplasia Gait Self-selected walking Kinematics |
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