Dynamics of postural control during bilateral stance - Effect of support area, visual input and age

Research output: Contribution to journalJournal articlepeer-review

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Dynamics of postural control during bilateral stance - Effect of support area, visual input and age. / Raffalt, Peter C; Spedden, Meaghan Elizabeth; Geertsen, Svend Sparre.

In: Human Movement Science, Vol. 67, 102462, 2019.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Raffalt, PC, Spedden, ME & Geertsen, SS 2019, 'Dynamics of postural control during bilateral stance - Effect of support area, visual input and age', Human Movement Science, vol. 67, 102462. https://doi.org/10.1016/j.humov.2019.05.007

APA

Raffalt, P. C., Spedden, M. E., & Geertsen, S. S. (2019). Dynamics of postural control during bilateral stance - Effect of support area, visual input and age. Human Movement Science, 67, [102462]. https://doi.org/10.1016/j.humov.2019.05.007

Vancouver

Raffalt PC, Spedden ME, Geertsen SS. Dynamics of postural control during bilateral stance - Effect of support area, visual input and age. Human Movement Science. 2019;67. 102462. https://doi.org/10.1016/j.humov.2019.05.007

Author

Raffalt, Peter C ; Spedden, Meaghan Elizabeth ; Geertsen, Svend Sparre. / Dynamics of postural control during bilateral stance - Effect of support area, visual input and age. In: Human Movement Science. 2019 ; Vol. 67.

Bibtex

@article{9df64fb58ed04ddaa7110afa3b579d06,
title = "Dynamics of postural control during bilateral stance - Effect of support area, visual input and age",
abstract = "The present study investigated the effect of support area, visual input and aging of the dynamics of postural control during bilateral stance. Fifteen young (22.1 ± 1.7 years) and fifteen older (68.3 ± 2.7 years) individuals completed four different 90 s bilateral stance trials: 1) shoulder wide feet distance with eyes open, 2) shoulder wide feet distance with eyes closed, 3) narrow feet distance with eyes open, and 4) narrow feet distance with eyes closed on a force plate form. The anterior (AP) and mediolateral (ML) center of pressure (COP) trajectories were calculated from the middle 60 s of the ground reaction forces and moments. Sample entropy (SaEn), correlation dimension (CoD), the largest Lyapunov exponent (LyE) and entropic half-life (ENT½) were calculated for the COP in both directions. In young individuals, a narrower support area resulted in a restricted movement solution space with lower SaEn, lower LyE and longer ENT½ in the executed motor control strategy, whereas it increased the CoD in the older individuals. During the eyes closed trials, SaEn, CoD and LyE increased and decreased ENT½ for both groups in the AP direction and increased SaEn and LyE in the ML direction for the older individuals alone. This indicates that aging is associated with direction- and task-dependent changes in the dynamics of the executed COP movements during postural stance tasks.",
keywords = "Faculty of Science, Balance, Nonlinear dynamics, Upright stance, Aging",
author = "Raffalt, {Peter C} and Spedden, {Meaghan Elizabeth} and Geertsen, {Svend Sparre}",
note = "CURIS 2019 NEXS 238 (In progress / October 2019) Copyright {\textcopyright} 2019. Published by Elsevier B.V.",
year = "2019",
doi = "10.1016/j.humov.2019.05.007",
language = "English",
volume = "67",
journal = "Human Movement Science",
issn = "0167-9457",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Dynamics of postural control during bilateral stance - Effect of support area, visual input and age

AU - Raffalt, Peter C

AU - Spedden, Meaghan Elizabeth

AU - Geertsen, Svend Sparre

N1 - CURIS 2019 NEXS 238 (In progress / October 2019) Copyright © 2019. Published by Elsevier B.V.

PY - 2019

Y1 - 2019

N2 - The present study investigated the effect of support area, visual input and aging of the dynamics of postural control during bilateral stance. Fifteen young (22.1 ± 1.7 years) and fifteen older (68.3 ± 2.7 years) individuals completed four different 90 s bilateral stance trials: 1) shoulder wide feet distance with eyes open, 2) shoulder wide feet distance with eyes closed, 3) narrow feet distance with eyes open, and 4) narrow feet distance with eyes closed on a force plate form. The anterior (AP) and mediolateral (ML) center of pressure (COP) trajectories were calculated from the middle 60 s of the ground reaction forces and moments. Sample entropy (SaEn), correlation dimension (CoD), the largest Lyapunov exponent (LyE) and entropic half-life (ENT½) were calculated for the COP in both directions. In young individuals, a narrower support area resulted in a restricted movement solution space with lower SaEn, lower LyE and longer ENT½ in the executed motor control strategy, whereas it increased the CoD in the older individuals. During the eyes closed trials, SaEn, CoD and LyE increased and decreased ENT½ for both groups in the AP direction and increased SaEn and LyE in the ML direction for the older individuals alone. This indicates that aging is associated with direction- and task-dependent changes in the dynamics of the executed COP movements during postural stance tasks.

AB - The present study investigated the effect of support area, visual input and aging of the dynamics of postural control during bilateral stance. Fifteen young (22.1 ± 1.7 years) and fifteen older (68.3 ± 2.7 years) individuals completed four different 90 s bilateral stance trials: 1) shoulder wide feet distance with eyes open, 2) shoulder wide feet distance with eyes closed, 3) narrow feet distance with eyes open, and 4) narrow feet distance with eyes closed on a force plate form. The anterior (AP) and mediolateral (ML) center of pressure (COP) trajectories were calculated from the middle 60 s of the ground reaction forces and moments. Sample entropy (SaEn), correlation dimension (CoD), the largest Lyapunov exponent (LyE) and entropic half-life (ENT½) were calculated for the COP in both directions. In young individuals, a narrower support area resulted in a restricted movement solution space with lower SaEn, lower LyE and longer ENT½ in the executed motor control strategy, whereas it increased the CoD in the older individuals. During the eyes closed trials, SaEn, CoD and LyE increased and decreased ENT½ for both groups in the AP direction and increased SaEn and LyE in the ML direction for the older individuals alone. This indicates that aging is associated with direction- and task-dependent changes in the dynamics of the executed COP movements during postural stance tasks.

KW - Faculty of Science

KW - Balance

KW - Nonlinear dynamics

KW - Upright stance

KW - Aging

U2 - 10.1016/j.humov.2019.05.007

DO - 10.1016/j.humov.2019.05.007

M3 - Journal article

C2 - 31330476

VL - 67

JO - Human Movement Science

JF - Human Movement Science

SN - 0167-9457

M1 - 102462

ER -

ID: 224945508