Is change in mental distress among adolescents predicted by sedentary behavior or screen time? Results from the longitudinal population study The Tromsø Study: Fit Futures
AuthorOpdal, Ida Marie; Morseth, Bente; Handegård, Bjørn Helge; Lillevoll, Kjersti; Nilsen, Wendy; Nielsen, Christopher Sivert; Furberg, Anne-Sofie; Rosenbaum, Simon; Rognmo, Kamilla
Design - Prospective study.
Setting - Sample drawn from upper secondary school students (mean age 16.3 years at baseline) from two municipalities in Northern Norway participating in The Tromsø Study: Fit Futures 1 and 2.
Participants - 686 adolescents (54.5% female), with complete self-reported and accelerometer data after multiple imputation.
Primary outcome measures - Mental distress assessed via the Hopkins Symptom Checklist-10 (HSCL-10).
Results - Minutes in sedentary behaviour measured by accelerometer showed no significant relationship with mental distress in neither crude, partly adjusted nor multiple adjusted hierarchic linear regression analyses. Self-reported screen time was positively associated with mental distress in all analyses (multiple adjusted, B=0.038, p=0.008, 95% CI 0.010 to 0.066). However, the effect was small.
Conclusions - Self-reported screen time was associated with slightly elevated mental distress 2 years later, whereas objectively measured minutes in sedentary behaviour was not, indicating a discrepancy in the results depending on measurement methods.