Daytime Sleep Problems Are Related to Fine Motor Function in Persons with Down Syndrome

Abstract

ABSTRACT Given the high prevalence of sleep problems and fine motor deficits that have been reported in persons with Down syndrome (DS), this study was to investigate the effect of sleep-related problems occurring during the day on fine motor function (i.e. manual dexterity and handgrip strength) in persons with DS. We also tested the moderating role of obstructive sleep apnoea (OSA) in the link between sleep-related problems occurring during the day and fine motor function. It was hypothesised that subtle sleep-related problems occurring during the day would significantly predict fine motor performance. Fifty-two persons with DS, aged 13–54, participated and caregivers completed a sleep questionnaire for their children with DS. Hierarchical multiple regression analyses indicated a greater frequency of sleep-related problems occurring during the day significantly predicted greater manual dexterity deficits. Results also suggested that OSA was the moderator for the association between sleep-related problems occurring during the day and manual dexterity. This study has highlighted the importance of exploring sleep problems that might impair fine motor performance for the DS population in their everyday lives. Additional studies are needed to develop effective interventions to promote sleep hygiene and fine motor development in this population.