Reciprocal associations between depression and screen-based sedentary behaviors in adolescents differ by depressive...

The heterogeneity of depression and sedentary behavior complicates understanding of mechanisms underlying and interventions addressing comorbid depression and sedentary behavior in adolescents. This study investigated reciprocal associations between four depressive symptom dimensions and two types of screen-based sedentary behaviors in adolescents, and tested whether these associations differed by sex.

A school-based longitudinal cohort (N = =2,717, baseline Mage=14.57 years) completed questionnaires during two assessments one year apart. Participants reported on levels of four depressive symptom dimensions (continuous) and television viewing and computer/videogame use (≥2 h/day; yes vs. no).

Reciprocal associations between computer/videogame use and higher negative affect symptoms were observed (computer/video games predicting negative affect, β=0.06, 95%CI 0.01-0.11, p = =0.01; negative affect predicting computer/video games, OR 1.29, 95%CI 1.06-1.58, p = =0.01). The relationship between baseline computer/videogame use and subsequent negative affect differed by sex (p = =0.02), and was significant in girls (β=0.11, 95%CI 0.04-0.18, p = =0.002), but not boys (β=0.004, 95%CI -0.06-0.07, p = =0.90). Baseline computer/videogame use predicted somatic symptoms at follow-up (β=0.06, 95%CI 0.01-0.10, p = =0.02), but the reverse association was non-significant. Higher baseline positive affect predicted computer/videogame use at follow-up (OR 1.16, 95%CI 1.02-1.31, p = =0.02), but the reverse association was non-significant. Television viewing was unrelated to each depressive symptom dimension in either direction.

Self-reports may be subject to recall errors and biases, and do not provide clinical diagnoses.

Associations are not uniform across screen-based sedentary behavior type, depressive symptom dimension, and sex. The association between computer/videogame use and negative affect symptoms may be reciprocal across time and particularly robust among girls.