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Actigraph placement and sleep estimation in children
E Juulia Paavonen1, Mika Fjällberg, Maija-Riikka Steenari
1Department of Child Psychiatry, University of Helsinki, Finland.
Insights
Actigraph placement on the wrist or waist showed high agreement in estimating sleep in children. Mean sleep duration estimates were similar across placements, indicating consistent sleep monitoring.
Area of Science:
- Pediatric sleep research
- Biomedical engineering
- Chronobiology
Background:
- Actigraphy is a non-invasive method for sleep-wake monitoring.
- Accurate sleep estimation is crucial for diagnosing sleep disorders in children.
- Understanding the impact of device placement is essential for reliable data collection.
Purpose of the Study:
- To evaluate the effect of actigraph placement (waist vs. wrist) on sleep estimation in children.
- To compare sleep parameters derived from different actigraph locations.
Main Methods:
- A descriptive study was conducted in a naturalistic setting.
- Twenty children (aged 7-12 years) participated.
- Actigraphy measured motor activity from the waist and non-dominant wrist for three consecutive days.
Main Results:
- Minute-by-minute agreement for sleep-wake states between wrist and waist placement was 92.5%.
- Sleep parameters recorded from the wrist and waist showed good correlation.
- Mean sleep values did not significantly differ between the two measurement sites.
Conclusions:
- Actigraph placement slightly influenced measured activity parameters.
- The impact of placement on 3-night mean sleep estimates in children was not statistically significant.
- Both wrist and waist actigraphy provide reliable sleep estimates in pediatric populations.
Study Objectives:
To determine whether actigraph placement affects sleep estimation in children.
Design:
Descriptive study.
Setting:
Naturalistic setting.
Participants:
Twenty children aged 7-12 years from primary schools.
Interventions:
N/A.
Measurements:
Motor activity was measured from the waist and non-dominant wrist with actigraphs for three consecutive days during a school week.
Results:
The minute-by-minute agreement of sleep-wake states between the two measurement sites was 92.5%. Wrist- and waist-recorded sleep parameters correlated well and the mean values did not differ.
Conclusions:
Although the placement of the actigraph slightly affected the measured activity parameters, its influence on 3-night mean sleep estimates in children was not statistically significant.