0117 Association between Mother-Child Sleep-Wake Rhythm Synchrony and Maternal Emotional Health

Abstract Introduction Synchrony between mother and infant sleep-wake rhythms is positively associated with attachment maternal mental health. Chronotype a measure of one’s circadian rhythm which influences sleep timing other physiological processes. Whether synchrony mother-child chronotype similarly health into early childhood, when children’s behavior less dependent on the mother, unknown. Thus, we examined relation mother’s emotional Methods 106 healthy preschool-aged children (50.78±9.54 months) mothers (34±8.7 years) were included in this secondary analysis. Wrist-worn actigraphy (range 3-16 days) was used to assess duration midpoint. The Munich Questionnaire calculate midpoint overnight free days (MSFsc) corrected for debt workdays. Dyad calculated as phase angle (phase difference) mothers’ MSFsc MSFsc. Maternal measured Center Epidemiologic Studies Depression Scale (CESD). Results Linear regression (adjusted child’s age, sex, Peabody Picture Vocabulary Test score, socioeconomic status, employment shiftwork) indicated no significant association dyad (p=0.33). However, median split scores (CESD) supports that later (i.e. chronotype) more depression symptoms (p<.01). Conclusion present results provide tentative support hypothesis earlier child better even childhood. Future research needs be done elucidate whether whose not aligned their primary bout may experience negative interactions leading worse Further analyses will consider additional measures incorporate than just alignment These findings point possible source poor can targeted future research. Support (if any) NIH R01 HL111695