Influence of moving visual environment on sit-to-stand kinematics in children and adults.
Percept Mot Skills
; 109(1): 121-32, 2009 Aug.
Article
em En
| MEDLINE
| ID: mdl-19831093
ABSTRACT
The effect of visual field motion on the sit-to-stand kinematics of adults and children was investigated. Children (8 to12 years of age) and adults (21 to 49 years of age) were seated in a virtual environment that rotated in the pitch and roll directions. Participants stood up either (1) concurrent with onset of visual motion or (2) after an immersion period in the moving visual environment, and (3) without visual input. Angular velocities of the head with respect to the trunk, and trunk with respect to the environment, w ere calculated as was head andtrunk center of mass. Both adults and children reduced head and trunk angular velocity after immersion in the moving visual environment. Unlike adults, children demonstrated significant differences in displacement of the head center of mass during the immersion and concurrent trials when compared to trials without visual input. Results suggest a time-dependent effect of vision on sit-to-stand kinematics in adults, whereas children are influenced by the immediate presence or absence of vision.
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Base de dados:
MEDLINE
Assunto principal:
Postura
/
Visão Ocular
/
Fenômenos Biomecânicos
/
Interface Usuário-Computador
/
Campos Visuais
/
Comportamento Infantil
/
Movimento (Física)
/
Movimento
Limite:
Adult
/
Child
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Percept Mot Skills
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Estados Unidos