Prediction equations for balance measured as sway speed by head tracking with eyes open and closed.
Objectives-To provide prediction equations for balance measured as sway speed, a population of randomly selected subjects was used as a model.
Methods-265 subjects were selected from voter registration rolls in Arizona and Louisiana, USA.
For validation these predicted values were compared with observed values obtained from a second population in California, USA.
Sway speed with eyes open as a natural logarithm was : In (open)=-0.248333 - 0.009634 x age+0.000164 x age2 and sway speed with eyes closed was : ln (closed)=-0.585707 - 0.023074 x age+0.000315 x age2+0.038496 x height (cm) Conclusions-The natural logarithm of balance with the eyes open was related to age by both linear and quadratic functions.
Additionally with the eyes closed balance was dependent on height.
These equations can be used to predict performance of groups being studied for effects of noise and chemicals.
To define abnormality of individual subjects the predicted value plus 1.5 SDs could be used.
Mots-clés Pascal : Exposition professionnelle, Médecine travail, Composé chimique, Toxicité, Système nerveux pathologie, Test neuropsychologique, Stimulus acoustique, Homme, Tâche poursuite, Mouvement corporel, Essai, Vitesse déplacement, Perception, Age
Mots-clés Pascal anglais : Occupational exposure, Occupational medicine, Chemical compound, Toxicity, Nervous system diseases, Neuropsychological test, Acoustic stimulus, Human, Tracking task, Body movement, Test, Speed, Perception, Age
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0495850
Code Inist : 002B03L01. Création : 01/03/1996.