Changes in circadian timing following a 1-week in-home sleep extension manipulation in habitually short-sleeping adolescents.

ABSTRACT:

Study objectives

Evaluate objectively measured circadian rhythms following 1-week of at-home sleep extension in habitually short-sleeping adolescents.

Methods

Twenty-six participants (16.1 ± 1.2 years, 69% female, and 65% White non-Hispanic) with insufficient sleep (≤7 h on school nights) were randomized to 1 week of typical sleep (TS; usual school schedule) and sleep extension (EXT; ≥1-h additional time in bed) in counterbalanced order with a 1-month washout between conditions. Home monitoring of actigraphy-estimated sleep and light exposure was assessed during both weeks. Hourly in-laboratory evening/morning dim-light salivary melatonin samples were obtained and onset (DLMOn) and offset (DLMOff) were calculated following each condition.

Results

Sleep duration increa

SUBMITTER: Holtman S 

PROVIDER: S-EPMC12477115 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature