Postural and trunk responses to unexpected perturbations depend on the velocity and direction of platform motion

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15510%2F16%3A33159143" target="_blank" >RIV/61989592:15510/16:33159143 - isvavai.cz</a>

Result on the web

<a href="http://www.biomed.cas.cz/physiolres/pdf/65/65_769.pdf" target="_blank" >http://www.biomed.cas.cz/physiolres/pdf/65/65_769.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Postural and trunk responses to unexpected perturbations depend on the velocity and direction of platform motion

Original language description

This study compares postural and trunk responses to translating platform perturbations of varied velocity and direction. A group of 18 young and active subjects were exposed to a set of postural perturbations at varied velocities (5, 10, 15, and 20 cm/s) and directions of platform movement (forward, backward, left-lateral, and right-lateral). The center of pressure (CoP) displacement measurement, in addition to the trunk motion (representing the center of mass (CoM) displacement), were both monitored. Results identified that the CoP displacement increased from slow to faster velocities of platform motion more widely in both anterior and posterior directions (50.4% and 48.4%) as compared to the CoM displacement (17.8% and 14.9%). A greater increase in the peak CoM velocity (70.3% and 69.6%) and the peak CoM acceleration (60.5% and 53.1%) was observed. The values in the anterior and posterior direction only differed significantly at the highest velocity of platform motion (i.e. 20 cm/s). A similar tendency was observed in the medio-lateral direction, but there were no significant differences in any parameter in the left-lateral and right-lateral direction. The velocity of the platform motion highly correlated with peak velocity (r = 0.92-0.97, p < 0.01) and moderately with amplitude of trunk displacement (r = 0.56-0.63, p < 0.05). These findings indicate that the velocity of perturbation significantly alters peak CoM velocity rather than the magnitude of CoM displacement. The effect of the direction of perturbations on the trunk response emerges only at a high velocity of platform motion, such that the peak CoM velocity and peak CoM acceleration are significantly greater in anterior than posterior direction.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

AK - Sport and leisure time activities

OECD FORD branch

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Project

<a href="/en/project/7AMB14SK073" target="_blank" >7AMB14SK073: Innovation of methods for assessment of postural and core stability to improve performance and prevent injuries</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

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

Name of the periodical

Physiological Research (print)

ISSN

0862-8408

e-ISSN

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Volume of the periodical

65

Issue of the periodical within the volume

5

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

8

Pages from-to

769-776

UT code for WoS article

000389223400006

EID of the result in the Scopus database

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