ABSTRACT
Introduction: School young who practice physical activity regularly have greater self-esteem and academic self-concept compared to those who do not practice, not knowing if this condition is maintained in the context of the COVID-19 pandemic. Objective: To compare self-esteem with academic self-concept in Chilean school young according to sex and physical activity habit. Secondly, to associate self-esteem with the academic self-concept of school young. Methods: Cross-sectional study that evaluated 108 schools young (50.9 % female) with a mean age of 13.96 + 2.85 years old. The instruments used were the Rosenberg scale, the academic self-concept scale, and a dichotomous question related to the habit of physical activity. Comparisons were made through Student's t-tests, Mann Whitney U, and associations with Pearson's Ji-Square. Results: Significant differences were found in favor of males in self-esteem (p= 0.007), without differences in the rest of the variables, nor between physically active school young vs. physically inactive school young. In addition, a statistically significant association was found between self-esteem with academic self-efficacy (p< 0.05), perceived performance (p< 0.001), and total score of the academic self-concept scale (p< 0.001) in male, female, physically active school young, physically inactive school young and total sample. Conclusion: There is an association between self-esteem with academic self-efficacy, perceived performance, and total score on the academic self-concept scale in Chilean schools young, regardless of sex and physical activity habit. Additionally, there is a statistically significant mean difference in favor of males for self-esteem. © 2022, Editorial Ciencias Medicas. All rights reserved.