Robust evaluation of time since awakening using force platform posturography
Rev. bras. eng. biomed
;
30(4): 322-329, Oct.-Dec. 2014. graf, tab
Artigo
em Inglês
| LILACS
| ID: lil-732831
ABSTRACT
INTRODUCTION:
Sleepiness is responsible for a considerable proportion of traffic accidents. It is thus an important traffic safety issue to find a robust, objective and practical way to estimate the amount of time a person has been awake. To attempt to meet this goal, we investigated the relationship between sleepiness and posture control.METHODS:
Subjects were kept awake for 36 hours and posturographic data during quiet standing were collected every two hours by means of a force platform. The standing surface (rigid surface or foam surface) and visual (eyes open or eyes closed) conditions were manipulated.RESULTS:
In the more challenging conditions (with foam surface and/or eyes closed), the body sway variables derived from the center of the pressure measurement increased significantly when time since awakening became greater than 21 h in almost all subjects.CONCLUSION:
Based on this result, we propose a practical protocol that could robustly assess whether time since awakening was greater than 21 h.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Tipo de estudo:
Guia de Prática Clínica
Idioma:
Inglês
Revista:
Rev. bras. eng. biomed
Assunto da revista:
Engenharia Biomédica
Ano de publicação:
2014
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade Federal do ABC - UFABC/BR
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