Fei-Hong Hu

Background : Although physical exercise has been proven to yield beneficial outcomes for individual health, the dose–response association between physical exercise time and depression among adolescents remains unclear. This study aimed to investigate the association between exercise time and depression among adolescents, as well as the dose–response relationship. Methods : A logistic regression analysis was conducted to determine the correlation between physical exercise time and depression among adolescents. The model controlled for age, ethnicity, economic status, parental relationship, divorce, being an only child, and sleep time. A restricted cubic spline model was used to examine the nonlinear dose–response relationship. Results : A significant inverse correlation was demonstrated between adolescents’ physical exercise time and depression ( P = .014). Both insufficient exercise (odds ratios = 1.27; 95% CI, 0.98–1.65; P = .072) and excessive level (odds ratios = 2.14; 95% CI, 1.03–4.47; P = .041) showed positive associations with depression. Restricted cubic spline analysis indicated that appropriate exercise (2.0–9.5 h/wk) may prevent depression, while excessive exercise (>9.5 h/wk) may exacerbate it ( P -nonlinear < .001, P -overall < .001). Conclusions : Low physical exercise time is associated with higher risk for depressive symptoms in adolescents, whereas excessive exercise is also associated with higher risk of depression, particularly in boys. The findings of this study underscore the importance of adolescents increasing their physical exercise time, but also maintaining a balance to avoid excessive exercise.

Aims and Objectives: To determine the global prevalence of nursing burnout syndrome and time trends for the last 10 years.Background: The prevalence of burnout syndrome varied greatly in different regions in the last 10 years, so the average prevalence and time trends of nursing burnout syndrome for the last 10 years were not completely clear.Design: A meta‐analysis conducted in the PRISMA guidelines.Methods: CINAHL, Web of Science, and PubMed were searched for trials on the prevalence of nursing burnout syndrome from 2012 to 2022 systematically. Hoy's quality assessment tool was used to evaluate the risk of bias. The global prevalence of nursing burnout syndrome was estimated, and subgroup analysis was used to explore what caused heterogeneity. Time trends for the last 10 years were evaluated by meta‐regression using Stata 11.0.Results: Ninety‐four studies reporting the prevalence of nursing burnout were included. The global prevalence of nursing burnout was 30.0% [95% CI: 26.0%–34.0%]. Subgroup analysis indicated that the specialty (p < .001) and the region (p < .001) and the year (p < .001) were sources of the high heterogeneity. Meta‐regression indicated that it tended to increase gradually for the last 10 years (t = 3.71, p = .006). The trends increased in Europe (t = 4.23, p = .006), Africa (t = 3.75, p = .006) and obstetrics (t = 3.66, p = .015). However, no statistical significance was found in ICU (t = −.14, p = .893), oncology (t = −0.44, p = .691) and emergency department (t = −0.30, p = .783).Conclusions: A significant number of nurses were found to have moderate‐high levels of burnout syndrome for the last 10 years. The meta‐analysis also indicated an increased trend over time. Therefore, more attention to the prevalence of nursing burnout syndrome is urgently required.Relevance to Clinical Practice: High prevalence of nursing burnout may attract more attention from the public. This analysis may serve as an impetus for relevant policy to change nurses' working conditions and reduce the occurrence of burnout.