Bullying consists in acts of intentional and repeated physical or psychological violence, completed by an individual or a group of individuals, provoking pain, distress and shame. Currently, it is considered a serious problem with health implications in adolescents. Shame is a self-conscious, multifaceted and socially focused emotion that relates to a negative self-assessment.

The study aim was to investigate the mediating role of Shame in the relationship between Bullying and Self-harm and Suicide Ideation in Portuguese adolescents.

346 adolescents (58.4% girls), aged 15.32±1.193 from public and private schools (9th to 12th grades) in Coimbra, answered the validated Portuguese versions of the Bullying Questionnaire, the Other as Shame Scale for Adolescents and the Self-Harm and Suicidal Ideation Questionnaire. For data analysis the SPSS 26 and Macro Process (Hayes 2020) was used.

Bullying Victimization had a prevalence of 18.78%. Girls and boys significantly differ in Bullying Victimisation, Self-Harm, Suicidal Ideation and Shame mean scores (all p<.05). In girls, Bullying Victimisation was correlated with Shame and Suicidal Ideation. The mediation analysis showed that, in girls, Shame partially mediated the relationship between Bullying and Suicidal Ideation (p<.001). We didn’t find these results in boys.

Bullying is a global problem that needs to be addressed. Adolescents of today are the adults of tomorrow. In a physical growth and mental maturation phase, it is urgent to avoid disruptors which lead to psychopathology. Our results corroborate that Shame can be a harmful factor in Bullying with deleterious consequences in adolescents.

Adolescence is a life period with considerable biological, psychological and social changes. Quality of life is a complex and multifactorial construct that necessarily encompasses the adolescent’s mental well-being. Some life habits like sleep, sport practice and screen time can be either risk factors or protective factors, influencing the quality of life and mental health.

To investigate the role of sleep habits, sport practice and screen time in quality of life, and psychological distress in a Portuguese adolescent girl sample.

409 girls, mean aged 13.51±2.298, from public and private schools in Coimbra answered questions about sleep time, sport practice and screen time habits; the Portuguese versions of the Quality of Life Questionnaire (reduced version) and theAnxiety, Depression and Stress Scale. SPSS 26 was used.

Girls mentioned to sleep 8,2 hours/night during the week and 9,4 hours/night at the weekend. They spend 1,5 hours/day during the week and 1,8 hours/day at the weekend with Screens. They spend 2,1 hours/ week in Sport Practice. Quality of Life was positive correlated with Sleep Time and negative correlated with Screen Time, Anxiety, Depression and Stress (all p<.05). Multiple regression analysis showed that Screen Time, Anxiety and Depression were all significant predictors of Quality of life in girls (p<0,05).

Our findings show that Screen Time is related with poor Quality of Life in girls. These results suggest the importance of addressing Screen Time and Psychological Distress in adolescent girls during adolescent health care consults.