Functional training program: the impact on depression, anxiety and sleep quality in adolescents

Depressive Symptoms and Their Associated Factors in Vocational-Technical School Students during the COVID-19 Pandemic

The objectives of this study were to compare the prevalence of depressive symptoms, behavioral habits, and QoL in students from two vocational–technical schools, and to determine the association of depressive symptoms with behavioral habits and quality of life (QoL) in these students during the COVID-19 pandemic. A cross-sectional survey was conducted with students attending the institution of the Brazilian Federal Network of Professional, Scientific and Technological Education. The students answered a questionnaire on sociodemographic variables, situations related to the COVID-19 pandemic, behavioral habits, QoL, and depressive symptoms. The outcome variable was the presence of depressive symptoms, assessed using the Children’s Depression Inventory (CDI). Poisson regression analysis with robust variance was performed. A total of 343 students participated in this study (women, 55.7%; mean age of 16.1 ± 0.93 years). The prevalence of depressive symptoms among students was 43.4% (95% confidence interval [CI]: 38.0–49.0), and these symptoms were significantly associated with being female (prevalence ratio [PR] 1.72; 95% CI: 1.31–2.27); being in the 10th grade (PR: 1.80; 95% CI: 1.18–2.76) and 9th grade (PR 2.08; 95% CI: 1.37–3.18); social isolation (PR: 2.04; 95% CI: 1.00–4.14); hunger due to a lack of food at home (PR: 1.78; 95% CI: 1.33–2.39); low physical activity levels (PR: 1.68; 95% CI: 1.09–2.59); and moderate (PR: 2.87, 95% CI: 1.68–4.89) and low QoL (PR: 5.66; 95% CI: 3.48–9.19). The results emphasize the importance of interventions aimed mainly at female students and those in the initial years of high school, in addition to the importance of physical activity, food safety, and QoL to improve the mental health of students.

The influence of time of day on the performance of adolescent swimmers

The study aimed to investigate the effects of time-of-day, chronotype, and sex differences on the relationships between anxiety, depression, sleep quality, and swimming performance of normally diurnally active adolescent athletes. Thirty-three competitive swimmers, 20 boys (14.8 ± 1.60 y) and 13 girls (14.4 ± 1.51 y) from two different swimming centers participate in the study. They performed 50 m and 400 m front crawl trials twice, at 08:00 h and 18:00 h, with an interval of 48 h in a 50 m swimming pool. Chronotype, depression, anxiety levels, and sleep quality were accessed by questionnaires. No effect of time-of-day was observed in girls for the 50 and 400 m trials. The swimming performance of boys was similar in the 50 m trials independent of time-of-day, but in the 400 m trial the performance time was better in the evening compared to morning. The best evening performance was observed among N-types. Linear regression analysis of the data of all participants revealed a positive correlation between sleep quality and anxiety level (p = .016; R² = 0.1769) and sleep quality and depression level (p = .006; R² = 0.2192). There was no correlation between chronotype and sleep quality in either sex (p = .4044; R² = 0.0232). We conclude that time-of-day can influence the performance of adolescent swimmers that differs with the distance of the trial and by sex. We also demonstrated the importance of sleep quality among adolescents swimmers as a factor that can influence anxiety and depression and thus consequently affect their performance.