A review of center of pressure (COP) variables to quantify standing balance in elderly people: Algorithms and open-access code.
Physiol Rep
; 9(22): e15067, 2021 11.
Article
em En
| MEDLINE
| ID: mdl-34826208
ABSTRACT
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.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Acidentes por Quedas
/
Algoritmos
/
Equilíbrio Postural
Tipo de estudo:
Etiology_studies
/
Risk_factors_studies
/
Screening_studies
Limite:
Aged
/
Humans
Idioma:
En
Revista:
Physiol Rep
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
França