Pediatric motor activity during sleep as measured by actigraphy

Area of Science:

• Pediatric Sleep Science
• Biomedical Engineering
• Chronobiology

Background:

• Actigraphy is a valuable tool for assessing sleep patterns in pediatric populations.
• Establishing normative data is crucial for interpreting individual actigraphy results in children and adolescents.
• Previous research has lacked comprehensive reference values for motor activity during sleep in this age group.

Purpose of the Study:

• To establish actigraphic reference values for motor activity during sleep in healthy children and adolescents aged 8-17 years.
• To provide normative data for percent sleep, mean activity count, and restlessness.
• To explore sex and age-related differences in sleep motor activity.

Main Methods:

• Utilized actigraphy data from 671 healthy children and adolescents (ages 8-17) from the US and Australia.
• Participants wore actigraphs for at least five nights and completed sleep diaries.
• Calculated reference values for percent sleep, mean activity count, and activity index, analyzing sex and age group differences.

Main Results:

• Provided reference values and percentiles for sleep motor activity by age group and sex.
• Identified that boys generally exhibit higher motor activity during sleep compared to girls.
• Observed age-related differences in sleep activity, though patterns varied across outcome measures.

Conclusions:

• This study offers the first comprehensive reference values for actigraphy-based motor activity during sleep in a large pediatric sample.
• The provided reference tables and percentiles serve as a valuable resource for clinicians and researchers using actigraphy in pediatric sleep assessments.
• Findings highlight the importance of considering sex and age when interpreting actigraphy data in children and adolescents.