title: The impact of sleep restriction on daytime movement in typically developing children.
abstract: The current study investigated the link between poor sleep and ADHD symptomatology. The effects of extending versus restricting sleep on subjective (questionnaires) and objective (actigraphy) measures of daytime movement were examined in 25 typically developing children aged 8-12 years. Subjective measures demonstrated an increase in ADHD symptomology following sleep restriction, with follow-up analyses indicating that findings were due to poorer attention, not changes in hyperactivity. The results of actigraphy data indicated that there were no differences found for mean or median daytime activity, but the standard deviation of activity was found to be significantly higher following sleep restriction. Contrary to the popular belief that sleep restriction results in increased overall activity, this study instead found an increase in variability of activity. This suggests that a sleep-restricted child's activity level may appear as alternating periods of high and low activity levels throughout the day.
authors.affiliation: Department of Psychology and Neuroscience, Dalhousie University, 1355 Oxford Street, PO Box 15000, Halifax, NS, B3H 4R2, Canada.
authors.forename: Abbey
authors.initials: A
authors.lastname: Poirier
authors.affiliation: Department of Psychology and Neuroscience, Dalhousie University, 1355 Oxford Street, PO Box 15000, Halifax, NS, B3H 4R2, Canada.
authors.forename: Melissa
authors.initials: M
authors.lastname: Gendron
authors.affiliation: Department of Psychology and Neuroscience, Dalhousie University, 1355 Oxford Street, PO Box 15000, Halifax, NS, B3H 4R2, Canada.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Vriend
authors.affiliation: Department of Psychology and Neuroscience, Dalhousie University, 1355 Oxford Street, PO Box 15000, Halifax, NS, B3H 4R2, Canada.
authors.forename: Fiona
authors.initials: F
authors.lastname: Davidson
authors.affiliation: Department of Psychology and Neuroscience, Dalhousie University, 1355 Oxford Street, PO Box 15000, Halifax, NS, B3H 4R2, Canada. penny.corkum@dal.ca.|IWK Health Centre, Halifax, NS, Canada. penny.corkum@dal.ca.|Colchester East Hants ADHD Clinic, Truro, NS, Canada. penny.corkum@dal.ca.
authors.forename: Penny
authors.initials: P
authors.lastname: Corkum
mesh_terms: D056044:Actigraphy; D001289:Attention Deficit Disorder with Hyperactivity / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology*; D002648:Child; D002657:Child Development; D005260:Female; D006801:Humans; D008297:Male; D009068:Movement; D012892:Sleep Deprivation / Q000150:complications* / Q000503:physiopathology*
keywords: ADHD; Children; Hyperactivity; Movement; Sleep restriction