title: Assessment of postural stability in patients with cerebellar disease using gyroscope data.
abstract: This study examines a relatively new method of studying and quantifying human postural stability in patients with degenerative cerebellar disease. Trunk sway and feet sway were measured during quiet stance. To test the method, ten patients and eleven healthy subjects performed two different stance tasks: standing with eyes open on a firm surface and standing with eyes closed on a foam support surface. Data were recorded using three body-worn gyroscopes (Xsens Technologies B.V.) to measure roll and pitch angular movements of the lower trunk, and left and right foot. The pitch versus roll plots of the trunk and feet were created, and the areas of the convex hull shapes were calculated. It was found that the area of the convex hull of the pitch versus roll plots is suitable for the identification of postural instability disorders caused by degenerative cerebellar disease.
authors.affiliation: Faculty of Biomedical Engineering, Czech Technical University in Prague, Sitna Sq. 3105, Kladno, Czech Republic.
authors.forename: Patrik
authors.initials: P
authors.lastname: Kutílek
authors.affiliation: Faculty of Biomedical Engineering, Czech Technical University in Prague, Sitna Sq. 3105, Kladno, Czech Republic. Electronic address: vladimir.socha@fbmi.cvut.cz.
authors.forename: Vladimír
authors.initials: V
authors.lastname: Socha
authors.affiliation: Faculty of Biomedical Engineering, Czech Technical University in Prague, Sitna Sq. 3105, Kladno, Czech Republic; Department of Rehabilitation and Sport Medicine, 2nd Faculty of Medicine, University Hospital Motol, Charles University in Prague, V Uvalu 84, Prague, Czech Republic.
authors.forename: Ondřej
authors.initials: O
authors.lastname: Čakrt
authors.affiliation: Palacky University of Olomouc, Faculty of Physical Culture, Tr. Miru 115, 771 11, Olomouc, Czech Republic.
authors.forename: Zdeněk
authors.initials: Z
authors.lastname: Svoboda
mesh_terms: D061725:Accelerometry / Q000379:methods; D002526:Cerebellar Diseases / Q000503:physiopathology*; D016002:Discriminant Analysis; D006801:Humans; D004856:Postural Balance / Q000502:physiology*; D011187:Posture / Q000502:physiology*; D015203:Reproducibility of Results; D013647:Task Performance and Analysis
keywords: Cerebellar disease; Convex hull; Feet sway; Postural stability; Trunk sway