A nondimensional normalization scheme for oxygen utilization data.
Gait Posture
; 24(1): 14-22, 2006 Aug.
Article
em En
| MEDLINE
| ID: mdl-16112865
ABSTRACT
The total oxygen required for gait (gross utilization) is a widely used indicator of locomotor efficiency. The standard scheme of mass normalization (dividing gross utilization by mass) is intended to eliminate confounding effects that arise from variations in age and size. Despite its prevalence, mass normalization has been shown to be inadequate, as the normalized quantity retains a marked dependence on clinically relevant factors. The current study proposes a new scheme for normalizing oxygen utilization data. The new scheme, called net-nondimensional normalization, is based on the use of net oxygen utilization (gross-rest) and nondimensional gait variables. Measures of statistical significance are employed to demonstrate that net nondimensional normalization is superior to mass normalization. Net nondimensional oxygen utilization is shown to be largely independent of the relevant physiological and anatomical factors, and is therefore well suited for studies where an independent measure of gait efficiency is needed.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Consumo de Oxigênio
/
Marcha
Tipo de estudo:
Risk_factors_studies
Limite:
Adolescent
/
Child
/
Child, preschool
/
Humans
/
Infant
Idioma:
En
Revista:
Gait Posture
Assunto da revista:
ORTOPEDIA
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Estados Unidos