Background: The potential mechanisms underlying cyber victimization and the resulting psychological and physical symptoms remain unclear. Thus, the present study investigated whether Internet addiction mediates the association between peer victimization (e.g., cyberbullying) and psychological and physical symptoms. Furthermore, it was assessed whether physical exercise moderates the hypothetical mediation. Methods: 1854 students from 11 middle and high schools in Shenzhen, Guangdong Province, China, were sampled for this study. Psychological and physical symptoms were assessed using the World Health Organization Quality of Life-BREF, while Internet addiction was evaluated using the Internet addiction test by Young. Cyber victimization was measured using a single question. In addition, this study examined whether Internet addiction mediated the association between cyber victimization and both psychological and physical symptoms. Additional work was conducted to test if physical exercise played a moderating role in the mediation hypothesized above. Mediation and moderation were analyzed using PROCESS macro for SPSS. Results: Regression analysis showed that both cyber victimization (β = − 0.102, p < 0.05) and Internet addiction (β = − 0.278, p < 0.05) significantly predicted psychological and physical symptoms and demographic variables were controlled. Further mediation analysis suggested that Internet addiction mediated the relationship between cyber victimization and psychological and physical symptoms. The 95% CI (confidence interval) of the direct effect was (− 4.283, − 1.696) and the indirect effect (− 1.904, − 0.820), respectively, excluding zero. Finally, moderation analysis indicated that physical exercise moderated the relationship between Internet addiction and psychological and physical symptoms (p = 0.047). Conclusions: Internet addiction plays a mediating role in the association between cyber victimization and both psychological and physical symptoms, Thus, addressing Internet addiction among cyberbullying victims is worthwhile. Furthermore, physical exercise alleviates negative impacts on health and should thus be promoted.
Interpersonal trauma in adolescent is an important public health concern. Depression can be a main consequence of interpersonal trauma, which subsequently results in various negative mental health outcomes. Previous research has investigated the independent effects of interpersonal trauma, interpersonal relationships and physical exercise on the risk of depression. However, the interaction effect of the three factors on depression remains unclear. We aim to investigate the associations between these potential factors and depression in adolescents, and explore the interaction effect of the three aforementioned factors. A cross-sectional study was conducted in Shenzhen, China, in 2017. A total of 1,883 adolescents from 11 middle schools and high schools were recruited. Demographic information, depressive symptoms, physical exercise, interpersonal relationships, interpersonal trauma, and academic record were collected through the use of standardized questionnaires. A linear regression model was performed to explore the association between these variables and depression. Pathway analysis was used to explore the role of potential mediators and moderators. The results showed that interpersonal trauma and poorer interpersonal relationships were significantly associated with depression (p < 0.05). We identified a mediating role of interpersonal relationships in the relationship between interpersonal trauma and depression, and a moderating role of physical exercise between interpersonal trauma and interpersonal relationships. This is the first study to examine the interaction effects of interpersonal trauma, interpersonal relationships and physical exercise on depression in adolescents. The current study therefore provides insights into factors which impact the mental health of adolescents. Through examining these factors one can gain further insight into potential factors associated with depression and therefore then develop more tailored interventions in order to support adolescents' mental well-being.
Background: The potential mechanisms underlying cyber victimization and the resulting psychological and physical symptoms remain unclear. Thus, the present study investigated whether Internet addiction mediates the association between peer victimization (e.g., cyberbullying) and psychological and physical symptoms. Furthermore, it was assessed whether physical exercise moderates the hypothetical mediation.Methods: 1,854 students from 11 middle and high schools in Shenzhen, Guangdong Province, China, were sampled for this study. Psychological and physical symptoms were assessed using the World Health Organization Quality of Life-BREF, while Internet addiction was evaluated using the Internet addiction test by Young. Cyber victimization was measured using a single question. In addition, this study examined whether Internet addiction mediated the association between cyber victimization and both psychological and physical symptoms. Additional work was conducted to test if physical exercise played a moderating role in the mediation hypothesized above. Mediation and moderation were analyzed using PROCESS macro for SPSS.Results: Regression analysis showed that both cyber victimization (β = -0.102, p < 0.05) and Internet addiction (β = -0.278, p < 0.05) significantly predicted psychological and physical symptoms and demographic variables were controlled. Further mediation analysis suggested that Internet addiction mediated the relationship between cyber victimization and psychological and physical symptoms. The 95% confidence interval of the direct effect was (-4.283, -1.696) and the indirect effect (–1.904, -0.820), respectively, excluding zero. Finally, moderation analysis indicated that physical exercise moderated the relationship between Internet addiction and psychological and physical symptoms (p = 0.047).Conclusions: Internet addiction plays a mediating role in the association between cyber victimization and both psychological and physical symptoms, Thus, addressing Internet addiction among cyberbullying victims is worthwhile. Furthermore, physical exercise alleviates negative impacts on health and should thus be promoted.
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