Exploring the bidirectional within-subject relationship between sleep and affective wellbeing: Insights from an intensive longitudinal study.

ABSTRACT: This study aimed to investigate the bidirectional relationships between affective wellbeing and sleep, and to explore the moderating effects of depressive and insomnia symptoms. Data from two studies, involving 178 participants in total aged 18-29 years, were analyzed. Over 14 days, participants completed daily surveys assessing affective wellbeing and wore ECG chest belts for heart rate variability monitoring to derive objective sleep indices. Multilevel models were used to examine within-subject associations between affective states and subsequent sleep, and vice versa, while considering depressive and insomnia symptoms as moderators. Higher positive affect than usual in the evening was associated with shorter total sleep time, shorter rapid eye movement sleep, and lower number of awaken

SUBMITTER: Hachenberger J 

PROVIDER: S-EPMC12662039 | biostudies-literature | 2025 Oct-Dec

REPOSITORIES: biostudies-literature