Development of Muscle Strength in The Context of The Covid 19 Pandemic for Middle School Students. GYMNASIUM, [S. l.], v. 22, n. 2, p. 14–37, 2021. DOI: 10.29081/gsjesh.2021.22.2.02. Disponível em: https://gymnasium.ub.ro/index.php/journal/article/view/643. Acesso em: 13 mar. 2025.