Lovato N, et al. – The study aimed to determine the longitudinal relationship between sleep and depressed mood in developing teens. The findings from the present study suggested that depressed mood might act as a precursor to poor sleep rather than the converse.

Methods

• For the purpose of this study, 138 Australian adolescents (mean age time 1 =15.69, standard deviation =0.92; 64% male) completed questionnaires to evaluate sleep parameters and depressed mood, on 2 occasions over one year.

Results

• According to the findings obtained, cross-sectional affiliations were seen between depressed mood and sleep duration, as well as wakefulness in bed.
• Prospective analyses showed depressed mood predicted less total sleep time on school nights as well as a longer latency to sleep onset on weekends one year later.
• Results revealed that there was no prospective support for sleep foreseeing later depressed mood.