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Normative values for sleep parameters in pre-schoolers using actigraphy.
Lassi Sahlberg1, Helena Lapinleimu2, Marko Elovainio3
1Department of Pediatrics and Adolescent Medicine, Turku University Hospital, Turku, Finland; Department of Pediatrics, University of Turku, Turku, Finland; Department of Clinical Neurophysiology, Turku University Hospital and University of Turku, Turku, Finland.
Summary
This study establishes the first reference values for actigraphy-measured sleep in preschool children. These new sleep parameters help in evaluating sleep disorders in young children.
Area of Science:
- Pediatric Sleep Medicine
- Biomedical Engineering
- Chronobiology
Background:
- Actigraphy is a valuable tool for assessing sleep in children.
- Established reference values for sleep parameters in preschool children are lacking.
- Normative data is crucial for accurate clinical evaluation of sleep disorders.
Purpose of the Study:
- To establish standardized reference values for actigraphy-measured sleep in preschool children.
- To identify age-related trends in sleep patterns within this age group.
- To provide a normative basis for evaluating pediatric sleep.
Main Methods:
- Ninety-seven children aged 2-6 years participated in a 7-day actigraphy monitoring study.
- Sleep parameters including total sleep time, sleep latency, and fragmentation were calculated.
- Reference intervals were determined using the 2.5th and 97.5th percentiles for different age groups.
Main Results:
- Reference intervals for 24-hour total sleep time ranged from 7h 23min to 9h 47min.
- Sleep efficiency ranged from 69-87%, and fragmentation index from 23-53%.
- Increasing age was associated with decreased daily sleep time, sleep latency, fragmentation, and napping.
Conclusions:
- Previously unavailable reference values for actigraphy-assessed sleep in preschool children were successfully created.
- Age-related trends in sleep patterns were identified.
- These normative data facilitate the evaluation of sleep disorders in young children.
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