What question did this study set out to answer?

The aim is to assess the effectiveness of various multi-method interventions on adolescent sleep rhythms.

February 19, 2026Journal of Adolescent Health0 citationsOpen Access

Toward Earlier Bedtimes: Randomized Trial of Multi-Method Interventions in a Community Cohort of Adolescents

LKLiisa KuulaUniversity of Helsinki APAnu-Katriina Pesonen

Key Points

The aim is to assess the effectiveness of various multi-method interventions on adolescent sleep rhythms.
Conducted a randomized trial within a community cohort of adolescents
Implemented multi-method interventions focused on sleep coaching
Measured the impact on sleep duration and behavior over four weeks
Personalized sleep coaching led to longer sleep duration
No interventions effectively changed late sleep rhythms
Duration of intervention deemed too short for meaningful behavioral change

Abstract

Although personalized sleep coaching resulted in persistently longer sleep, none of the interventions were successful in overcoming late sleep rhythms among an adolescent sample derived from the population register. Delayed sleep phase is a persistent condition with biological components, and a 4-week intervention is presumably too short for changing sleep behavior and rhythms. Clinical Trials number 1287174/NCT02964598.

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