Objectives The outbreak of the COVID-19 pandemic has had wide-ranging outcomes on adolescents’ well-being. However, less attention has been paid to the adolescent’s mental health during the pandemic. The pandemic may impair adolescents’ mental health through stress spillover from other family members, contextual and policy changes, and the disruption of everyday life routines. Therefore, our research is motivated by a need to address the relative scarcity of research examining adolescent mental health during the pandemic. Content This systematic review was conducted through the medical database, Web of Science, Scopus, Medline, Embase, Google Scholar, and Cochrane databases for peer-reviewed, cross-sectional, cohort studies assessing the mental health status of adolescents during the Covid-19 virus pandemic from May 2020 till Dec 2022 without language restriction. Keywords were selected based on the Mesh terms and Emtree. Summary Studies on coronavirus have revealed many significant psychological effects on teens of all ages. The most commom problems were on the stress and anxiety, sleep disorders, depression, post-traumatic stress disorder. Risk factors were concidered as prior mental health problem, female sexuality, fear of covid-19, nutrition, physical activity and listening the covid 19 news. Outlook Considering the critical age of teenagers, the role of parents is vital. Health policy maker should support parents as a key factors to approprate care for adolescent. Parents should be educated on parenting methods during the covid pandemic to avoid irreparable damage of adolescent’s mental health.

Background Pregnancy overweight can bring about undesirable complications to the mother, fetus, and neonate. Thus, one of the goals of pregnancy care should be lifestyle modification that improves physical activity and healthy nutrition. The present study determined the effect of Extended Parallel Process Model (EPPM)-based training on enhancing the physical activity of overweight pregnant women. Method This randomized controlled clinical trial examined 100 overweight pregnant women referred to two teaching hospitals in Tehran, Iran. The participants were assigned into two intervention and control groups through random allocation. The intervention group underwent EPPM-based training three times (18–20, 26–30, and 37–38 weeks of gestation), while the control group received regular prenatal care. The training content and approach were designed and presented based on the four constructs of EPPM, i.e., perceived susceptibility, perceived severity, perceived efficacy, and perceived self-efficacy. The 32-item Pregnancy Physical Activity Questionnaire (PPAQ) was used to measure and compare the participants’ four activity types at three rounds (18–20, 26–30, and 37–38 weeks of gestation) and their physical activity calendar in two periods. The data were analyzed by the SPSS − 26 software at a significance level of < 0.05. Results After the educational intervention, the mean physical activity scores of the intervention and control groups were 1462.2 ± 477.67 and 861 ± 381.29 (P < 0.001; CI = 95%) in the first round, 1278.15 ± 480.31 and 675 ± 375.03 (P < 0.001; CI: 95%) in the second round, respectively. The mean weight gain value in the second trimester equaled 4.09 ± 0.76 and 4.52 ± 0.71 for the intervention and the control group, orderly. This difference was significant in the second trimester (P = 0.002) but not in the third. Likewise, a comparative analysis of the neonates’ anthropometric indices and prenatal complications revealed no significant differences. Conclusion The EPPM-based educational intervention effectively contributes to motivating pregnant women and changing their behavior toward improving their physical activity and can be employed to encourage them to enhance their physical activity during pregnancy. Trial registration: This study was registered in the Iranian Registry of Clinical Trials (IRCT) under the IRCT20211207053310N1 Number(17/12/2021).