COVID¿19 lockdown effects on the anthropometrics, aerobic capacity, muscle function and metabolic control in children and adolescents with overweight and obesity Mauricio Inostroza Mondaca; Samuel Silva Garrido; Thais Rodríguez Orellana; Alessandra Maineri Roa; Constanza Olivares Quezada; Cesar Osorio-Fuentealba;

Physical activity and quality of life of children and adolescents with juvenile idiopathic arthritis, juvenile systemic lupus erythematosus and juvenile dermatomyositis during the COVID-19 pandemic Renata Soares; Fabiana de Carvalho Silva; Jade Dib Fernandez; Melissa Fraga; Maria Teresa Terreri; Claudio Arnaldo Len;

Cardiorespiratory fitness and socioeconomic influences in Chilean schoolchildren: a cross-sectional study Rodrigo Yáñez-Sepúlveda; Vicente Javier Clemente-Suárez; Josivaldo de Souza-Lima; Gerson Ferrari; Juan Hurtado-Almonacid; Juan Pablo Zavala-Crichton; Claudio Hinojosa-Torres; Tomás Reyes-Amigo; Jacqueline Páez-Herrera; Guillermo Cortés-Roco; Pedro Valdivia-Moral; Jorge Olivares-Arancibia; Sandra Mahecha-Matsudo;