Physical Activity, Screen Time, Nutritional Status and Sleep in Adolescents in Northeast Brazil

Abstract

Objective: To verify the prevalence of sleep quality and duration and its association with the level of physical activity, screen time and nutritional status in adolescents. Methods: This is a cross-sectional study with 1,432 adolescents (53.1%, female), ten to 14 years old (12.0±1.0 year) from public schools in Joao Pessoa, Northeast Brazil. Physical activity (≥300 vs. <300 minutes/week), screen time (≤2 vs. >2 h/day) and duration (<8 vs. ≥8 h/day) and perception of sleep quality (negative vs. positive perception) were measured by questionnaire. Nutritional status was assessed by body mass index (low weight / normal weight vs. overweight / obesity). Binary logistic regression was used to analyze association between variables, considering different aggregation of negative factors. Results: The prevalence of insufficient duration and negative perception of sleep quality was 12.6% (95%CI 10.9-14.4) and 21.0% (95%CI 18.9-23.1), respectively. There was a linear trend in the chance of the adolescents to present insufficient duration of sleep as a result of simultaneous negative factors (physical inactivity, excessive screen time, being overweight) (OR=4.31; 95%CI 1.50-12.48). Conclusions: Adolescents exposed simultaneously to low levels of physical activity, excessive screen time and overweight had a lower sleep duration.

Time to Sleep?—A Review of the Impact of the COVID-19 Pandemic on Sleep and Mental Health

“…Sleep deprivation also represents a significant issue in the younger segment of the population, with a prevalence between 11.7% and 72.7% being reported [ 28 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 ]. With the exception of some reports [ 36 , 37 ], the prevalence of sleep deprivation in this population group can be estimated between one-third and two-thirds. Overall, short sleep seems to be more prevalent on school nights as compared with free nights or weekends [ 31 , 33 , 36 , 38 ].…”

Sleep Quality and Duration in European Adolescents (The AdolesHealth Study): A Cross-Sectional, Quantitative Study

“…When comparing cities, a significantly higher PSQI index was obtained by participants from Seville in comparison to those from Reykjavik. These scores could be justified by recent studies, in which the subjects from Seville had a higher % of body fat compared to those from Reykjavik [ 58 , 69 ], which could affect their sleep quality [ 73 , 86 , 87 ]. Furthermore, the different meal times (especially in regards to dinner) characteristic of the Mediterranean population (<3 h before sleeping) could contribute to poor sleep quality due to gastrointestinal upset, heartburn and reflux [ 35 ].…”