The effect of a light finger touch on the signal complexity during quiet standing

• Autorzy: Brachman Anna , Sawicka Anna , Bednarz Bartłomiej , Akbas Anna , Słomka Kajetan J.

Identyfikatory

DOI

10.37190/ABB-02116-2022-01

• Języki publikacji: EN

Abstrakty

EN

The purpose of the study was to investigate the influence of additional tactile information (light fingertip touch) on the postural sway and regularity of center-of-pressure (COP) fluctuations. Thirty-two young, healthy participants performed a quiet standing task (30 s) on a force platform with and without light fingertip touch. COP time-series were analyzed using standard postural sway measures (range, root mean square error, velocity), COP regularity was measured with Sample entropy. Participants demonstrated significantly smaller postural sway with a light touch, but only in the anteroposterior direction. The amount of sway with additional tactile information in the sagittal plane reached the level of sway in the frontal plane without this information. Similarly, COP fluctuations were more irregular during light touch condition only in the anteroposterior direction, as evidenced by significantly higher Sample entropy. Furthermore, COP regularity decreased in the sagittal plane and reached level in the frontal plane without light touch. These results suggest that postural sway is mostly controlled in the sagittal plane and that in the mediolateral direction the control is mostly automated. In conclusion, our results support the notion that the light touch provides additional information which enhances postural stabilization. Our results expand the relation between COP regularity and the attention invested in posture in the touch domain and prove that light touch, as an attentional demanding task, leads to increased COP irregularity. Nonlinear measures of signal regularity (i.e., SampEn) provide surplus insight into human postural control and can be used as an additional useful tool to traditional balance measures.

Słowa kluczowe

EN

postural control; light touch; center of pressure regularity; postural balance

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2022
• Tom: Vol. 24, no. 3
• Strony: 91--97
• Opis fizyczny: Bibliogr. 33 poz., rys., tab., wykr.

Twórcy

autor

Brachman Anna

• Institute of Sport Sciences, Department of Biomechanics, The Jerzy Kukuczka Academy of Physical Education in Katowice, Katowice, Poland.

autor

Sawicka Anna

• Institute of Sport Sciences, Department of Biomechanics, The Jerzy Kukuczka Academy of Physical Education in Katowice, Katowice, Poland.

autor

Bednarz Bartłomiej

• Institute of Sport Sciences, Department of Biomechanics, The Jerzy Kukuczka Academy of Physical Education in Katowice, Katowice, Poland.

autor

Akbas Anna

• Institute of Sport Sciences, Department of Human Motor Behavior, The Jerzy Kukuczka Academy of Physical Education in Katowice, Katowice, Poland.

autor

Słomka Kajetan J.

• Institute of Sport Sciences, Department of Human Motor Behavior, The Jerzy Kukuczka Academy of Physical Education in Katowice, Katowice, Poland.

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