An on-line system for continuously monitoring 10 different quantitative measures of walking move ments to a high fidelity was employed in a study comparing the effects of tolerance for alcohol and dosage level in mg/kg body weight over an 80 min ute period following drinking. The data were sub jected to multivariate analyses of covariance. Com plex changes in walking were detected—some tran sient—during the period of observation. Different measures were optimally sensitive in monitoring a straight walking task and a blindfolded complex walk. The consequent problems of validation and generalization are noted.
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