Enhancements in the accuracy of the center of pressure (COP) determined with piezoelectric force plates are dependent on the load distribution.
J Biomech Eng
; 122(5): 523-7, 2000 Oct.
Article
em En
| MEDLINE
| ID: mdl-11091955
ABSTRACT
Errors up to +/- 30 mm in determining the COP with piezoelectric force plates have been reported in the literature. To compensate for these errors, correction formulas were proposed, based on measurements with single point loads. In this paper, it will be shown that the errors in the COP depend on the load distribution. Two examples are presented (1) simulated balance study, and (2) different pressure patterns during walking. Accurate corrections can only be made for forces distributed over a small area. Errors are expected to be overcompensated if there are only a few pressure peaks separated by large distances. These errors can be as large as the statistical errors (5.8 +/- 3.7 mm) after compensation. For certain situations, it is probably better not to use correction formulas.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Caminhada
/
Marcha
/
Modelos Biológicos
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
J Biomech Eng
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Áustria