3-D trajectory of body sway angles: A technique for quantifying postural stability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00064203%3A_____%2F15%3A10316204" target="_blank" >RIV/00064203:_____/15:10316204 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21460/15:00226438 RIV/00216208:11130/15:10316204

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.bbe.2015.02.001" target="_blank" >http://dx.doi.org/10.1016/j.bbe.2015.02.001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.bbe.2015.02.001" target="_blank" >10.1016/j.bbe.2015.02.001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

3-D trajectory of body sway angles: A technique for quantifying postural stability

Popis výsledku v původním jazyce

The article focuses on a non-invasive method of quantifying human postural stability. Recent alternatives to quantify human postural stability have several limitations - the major one being the evaluation of only two physical quantities of body movement in 3D space - however, a complex movement pattern can be described better using three physical quantities. A cheap 3DOF orientation tracker (Xsens MTx unit) placed on patient's trunk was used to measure roll, pitch and yaw. Using a novel method based on the total length of the 3-D trajectory of body sway angles, we are able to evaluate 3-D movements of the trunk. The trajectory length obtained by plotting roll, yaw and pitch vs. each other (i.e. curve in the 3-D plot) was used to identify a pathological balance control. In this study, ten patients with progressive cerebellar ataxia and eleven healthy subjects were measured and a statistical analysis was performed. The results yielded by new method show that the total trajectory lengths of patients with cerebellar disease are significantly larger than the total trajectory lengths of healthy subjects. It is evident from the median of the total trajectory lengths that the method based on the data obtained by an inexpensive orientation tracker may be used to quantify human postural stability and enables for studying body sway in 3-D space. For example, the 3-D deviations of the trunk angles in a time period that are caused by a tremor in 3-dimensional space can be studied accordingly by the method.

Název v anglickém jazyce

3-D trajectory of body sway angles: A technique for quantifying postural stability

Popis výsledku anglicky

The article focuses on a non-invasive method of quantifying human postural stability. Recent alternatives to quantify human postural stability have several limitations - the major one being the evaluation of only two physical quantities of body movement in 3D space - however, a complex movement pattern can be described better using three physical quantities. A cheap 3DOF orientation tracker (Xsens MTx unit) placed on patient's trunk was used to measure roll, pitch and yaw. Using a novel method based on the total length of the 3-D trajectory of body sway angles, we are able to evaluate 3-D movements of the trunk. The trajectory length obtained by plotting roll, yaw and pitch vs. each other (i.e. curve in the 3-D plot) was used to identify a pathological balance control. In this study, ten patients with progressive cerebellar ataxia and eleven healthy subjects were measured and a statistical analysis was performed. The results yielded by new method show that the total trajectory lengths of patients with cerebellar disease are significantly larger than the total trajectory lengths of healthy subjects. It is evident from the median of the total trajectory lengths that the method based on the data obtained by an inexpensive orientation tracker may be used to quantify human postural stability and enables for studying body sway in 3-D space. For example, the 3-D deviations of the trunk angles in a time period that are caused by a tremor in 3-dimensional space can be studied accordingly by the method.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

FS - Lékařská zařízení, přístroje a vybavení

OECD FORD obor

—

Projekt

<a href="/cs/project/VG20102015002" target="_blank" >VG20102015002: Osobní bezpečnostní dohledový systém pro podporu výcviku a zásahu jednotek IZS</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Biocybernetics and Biomedical Engineering

ISSN

0208-5216

e-ISSN

—

Svazek periodika

35

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

7

Strana od-do

185-191

Kód UT WoS článku

000361256200005

EID výsledku v databázi Scopus

2-s2.0-84938973874