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Morningness-Eveningness Preference and Motor Wake-Sleep Inertia in Adolescents.
Vincenzo Natale1, Alice Andreose1, Valeria Bacaro1
1Department of Psychology "Renzo Canestrari", University of Bologna, Viale Berti Pichat 5, 40127 Bologna, Italy.
Sensors (Basel, Switzerland)
|December 17, 2024
Summary
Morning-type adolescents experience greater motor wake inertia and less motor sleep inertia compared to evening-type adolescents, as measured by actigraphy. This study highlights chronotype differences in sleep-wake transitions.
Area of Science:
- Chronobiology
- Sleep Science
- Adolescent Health
Background:
- Circadian preference, or chronotype, influences sleep-wake patterns.
- Adolescents exhibit a wide range of chronotypes, impacting their daily functioning.
- Understanding sleep-wake transitions is crucial for adolescent well-being.
Purpose of the Study:
- To investigate differences in wake-sleep and sleep-wake transitions based on chronotype in adolescents.
- To quantify motor wake inertia and motor sleep inertia in relation to morningness and eveningness.
Main Methods:
- Actigraphy was used to monitor motor activity in 729 adolescents over at least three nights.
- Participants were categorized into morning-type (38) and evening-type (61) based on the reduced Morningness-Eveningness Questionnaire.
- Functional linear modeling analyzed minute-by-minute motor activity during transitions.
Main Results:
- Morning-type adolescents exhibited significantly higher motor wake inertia.
- Evening-type adolescents demonstrated significantly lower motor sleep inertia.
- Chronotype significantly impacts the dynamics of both wake-sleep and sleep-wake transitions.
Conclusions:
- Adolescent chronotype is associated with distinct patterns of motor activity during sleep-wake transitions.
- Morningness is linked to greater difficulty initiating wakefulness (wake inertia).
- Eveningness is associated with less pronounced inertia upon falling asleep (sleep inertia).
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