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Flavien Quijoux, Alice Nicolaï, Ikram Chairi, Ioannis Bargiotas, Damien Ricard, Alain Pierre Yelnik, Laurent Oudre, François Bertin‐Hugault, Pierre‐Paul Vidal, Nicolas Vayatis, Stéphane Buffat, Julien Audiffren
Postural control is often quantified by recording the trajectory of the center of pressure (COP)-also called stabilogram-during human quiet standing. This quantification has many important applications, such as the early detection of balance degradation to prevent falls, a crucial task whose relevance increases with the aging of the population. Due to the complexity of the quantification process, the analyses of sway patterns have been performed empirically using a number of variables, such as ellipse confidence area or mean velocity. This study reviews and compares a wide range of state-of-the-art variables that are used to assess the risk of fall in elderly from a stabilogram. When appropriate, we discuss the hypothesis and mathematical assumptions that underlie these variables, and we propose a reproducible method to compute each of them. Additionally, we provide a statistical description of their behavior on two datasets recorded in two elderly populations and with different protocols, to hint at typical values of these variables. First, the balance of 133 elderly individuals, including 32 fallers, was measured on a relatively inexpensive, portable force platform (Wii Balance Board, Nintendo) with a 25-s open-eyes protocol. Second, the recordings of 76 elderly individuals, from an open access database commonly used to test static balance analyses, were used to compute the values of the variables on 60-s eyes-open recordings with a research laboratory standard force platform.
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Quijoux, F., Nicolaï, A., Chairi, I., Bargiotas, I., Ricard, D., Yelnik, A. P., Oudre, L., Bertin‐Hugault, F., Vidal, P., Vayatis, N., Buffat, S., & Audiffren, J. (2021). A review of center of pressure (COP) variables to quantify standing balance in elderly people: Algorithms and open‐access code. Physiological Reports, 9*(22), e15067. https://doi.org/10.14814/phy2.15067
Quijoux, Flavien, et al. "A review of center of pressure (COP) variables to quantify standing balance in elderly people: Algorithms and open‐access code." Physiological Reports*, vol. 9, no. 22, 2021, pp. e15067, https://doi.org/10.14814/phy2.15067.
Quijoux, Flavien, Alice Nicolaï, Ikram Chairi, Ioannis Bargiotas, Damien Ricard, Alain Pierre Yelnik, Laurent Oudre, et al. "A review of center of pressure (COP) variables to quantify standing balance in elderly people: Algorithms and open‐access code." Physiological Reports* 9, no. 22 (2021): e15067. https://doi.org/10.14814/phy2.15067.
Quijoux F., Nicolaï A., Chairi I. [и др.] A review of center of pressure (COP) variables to quantify standing balance in elderly people: Algorithms and open‐access code* // Physiological Reports. — 2021. — Vol. 9, № 22. — P. e15067. — URL: https://doi.org/10.14814/phy2.15067
@article{quijoux2021review,
title = {{A review of center of pressure (COP) variables to quantify standing balance in elderly people: Algorithms and open‐access code*}},
author = {Flavien Quijoux and Alice Nicolaï and Ikram Chairi and Ioannis Bargiotas and Damien Ricard and Alain Pierre Yelnik and Laurent Oudre and François Bertin‐Hugault and Pierre‐Paul Vidal and Nicolas Vayatis and Stéphane Buffat and Julien Audiffren},
journal = {Physiological Reports},
year = {2021},
volume = {9},
number = {22},
pages = {e15067},
doi = {10.14814/phy2.15067},
url = {https://doi.org/10.14814/phy2.15067}
}TY - JOUR AU - Quijoux, Flavien AU - Nicolaï, Alice AU - Chairi, Ikram AU - Bargiotas, Ioannis AU - Ricard, Damien AU - Yelnik, Alain Pierre AU - Oudre, Laurent AU - Bertin‐Hugault, François AU - Vidal, Pierre‐Paul AU - Vayatis, Nicolas AU - Buffat, Stéphane AU - Audiffren, Julien TI - A review of center of pressure (COP) variables to quantify standing balance in elderly people: Algorithms and open‐access code* JO - Physiological Reports VL - 9 IS - 22 SP - e15067 PY - 2021 DA - 2021/11/01 DO - 10.14814/phy2.15067 UR - https://doi.org/10.14814/phy2.15067 ER -
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