Abstract
Background: As wandering in the demented is difficult to define qualitatively, we tride to define it quantitatively. We investigated the relationship between wandering and rhythm abnormalities. Methods: In order to study the pacing rhythms of wanderers observed in a subgroup of demented inpatients (dementia due to Alzheimer's disease and vascular dementia), we assessed 115 inpatients in terms of steps during four parts of a day and total daily steps using a pedometer.As the mean+2 S.D. of total daily steps in the nondemented was 9,979, we defined 10,000 steps in a day as the cut off for defining demented wanderers versus nonwanderers. Then, the pacing rhythms (nadir part and amplitude) were compared among demented wanderers, demented nonwanderers and nondemented subjects. Results: That there were no statistically significant differences among the three groups. But wandering groups defined by pedometer exhibited many of the same characteristics in wanderers observed in other studies. Conclusion: The quantification of steps might provide a good hallmark of wandering behaviors in the demented, and these results might indicate hyperpacing rather than rhythm dysfunctions to be essential to wandering behavior.
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