In this study a description of balance response to sudden external perturbations of the upright posture was performed. To this aim, subjects underwent to a series of translational perturbations at fixed speed in backward and forward direction. Center of pressure (CoP) displacement was analyzed in terms of temporal and spatial characteristics, showing a repeatable waveform which allowed the identification of two main response periods: the destabilizing and the counterbalancing phase. Different control features of balance response have been observed in both phases, with a temporal-based control of CoP displacement in the first phase and an amplitude-based control in the second one. Moreover, the analysis of CoP could be useful to identify the presence of the first trial effect and the habituation rate, two well-known features of perturbed posturography. These findings could contribute to the understanding of balance control in perturbed conditions and suggest CoP as a valuable measure in studying not only the quiet but also the perturbed stance.

Center of pressure based assessment of balance responses to repeated perturbations of upright stance / Mengarelli, Alessandro; Cardarelli, Stefano; Fioretti, Sandro; Burattini, Laura; DI NARDO, Francesco; Verdini, Federica. - ELETTRONICO. - 65:(2017), pp. 262-265. (Intervento presentato al convegno Joint Conference of the European Medical and Biological Engineering Conference, EMBEC 2017 and Nordic-Baltic Conference on Biomedical Engineering and Medical Physics, NBC 2107 tenutosi a fin nel 2017) [10.1007/978-981-10-5122-7_66].

Center of pressure based assessment of balance responses to repeated perturbations of upright stance

MENGARELLI, ALESSANDRO
Writing – Review & Editing
;
CARDARELLI, STEFANO
Membro del Collaboration Group
;
FIORETTI, Sandro
Supervision
;
BURATTINI, LAURA
Membro del Collaboration Group
;
DI NARDO, Francesco
Membro del Collaboration Group
;
VERDINI, Federica
Supervision
2017-01-01

Abstract

In this study a description of balance response to sudden external perturbations of the upright posture was performed. To this aim, subjects underwent to a series of translational perturbations at fixed speed in backward and forward direction. Center of pressure (CoP) displacement was analyzed in terms of temporal and spatial characteristics, showing a repeatable waveform which allowed the identification of two main response periods: the destabilizing and the counterbalancing phase. Different control features of balance response have been observed in both phases, with a temporal-based control of CoP displacement in the first phase and an amplitude-based control in the second one. Moreover, the analysis of CoP could be useful to identify the presence of the first trial effect and the habituation rate, two well-known features of perturbed posturography. These findings could contribute to the understanding of balance control in perturbed conditions and suggest CoP as a valuable measure in studying not only the quiet but also the perturbed stance.
2017
9789811051210
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/250214
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