TIME COURSE OF MOTOR WAKE INERTIA DISSIPATION ACCORDING TO AGE

Recently, it has been investigated the time course of motor sleep inertia (mSI) dissipation in an everyday life condition, from middle childhood to late adulthood, through actigraphy. Motor sleep inertia was dissipated in 70 minutes and sleep inertia phenomenon was more marked in younger than older participants. The aim of the current retrospective study was to examine, within the same sample, the time course of motor wake inertia (mWI) dissipation, i.e., the motor pattern in the transition phase from wakefulness to sleep, according to age. To this end, an overall sample of 374 participants (215 females), ranging in age between 9 and 70 years old, was examined. Each participant was requested to wear an actigraph around the non-dominant wrist for one week. The variation of the motor activity pattern of wake-sleep transition according to age was examined through the Functional Linear Modeling (FLM). FLM showed as motor wake inertia was dissipated around 30 minutes a) after the bedtime. Moreover, lower age was significantly associated with higher motor activity within the last two hours of wakefulness and the $rst twenty minutes a) after the bedtime. Overall, this pattern of results seems to suggest that mWI dissipation is mirrored to mSI