ABSTRACT
This study sought to identify the repercussions of the pandemic on the body weight of adolescents during social isolation due to the COVID-19 pandemic and associated life habits. Materials and Methods: This is a cross-sectional and quantitative study, carried out with adolescents enrolled in elementary school II in public schools in the north of Minas Gerais. Data collection was performed in virtual format through Google Forms. Questions were collected about changes in body weight, sociodemographic profile, anthropometric data, self-perception of body image, physical activity, screen time, consumption of ultra-processed foods, sleep quality and self-perception of health status. Pearson's chi-square test was used for analysis. Results: A total of 287 adolescents participated in the study, with a mean age of 12.97 years SD & PLUSMN;1.30, 60.3% (n=173) were female and 39.7% (n=114) were male. When evaluating the impact of the pandemic on the body weight of adolescents through self-report, it was observed that 63.8% (n=183) increased, 27.5% (n=79) maintained, and 08.7% (n=25) decreased body weight during the period of social isolation. Significant associations were observed between age group, nutritional status, body image, practice, and changes in physical activity. Conclusion: It is concluded that the habits and life behaviors adopted by adolescents during social isolation had a negative impact on the adolescents' body weight. The practice of PA is insufficient and dissatisfaction with body image associated with weight gain. In addition, social isolation caused an increase in body weight in eutrophic adolescents.