RT Journal Article T1 Adherence to the Mediterranean Diet and Health-Related Quality of Life during the COVID-19 Lockdown: A Cross-Sectional Study including Preschoolers, Children, and Adolescents from Brazil and Spain A1 Victoria-Montesinos, Desirée A1 Tárraga-Marcos, Almudena A1 Brazo Sayavera, Francisco Javier A1 Jiménez-López, Estela A1 Gutiérrez-Espinoza, Héctor A1 Panisello Royo, Josefa María A1 Tárraga-López, Pedro J. A1 López-Gil, José Francisco K1 Mediterranean dietary patterns K1 Eating healthy K1 Lifestyle K1 Pandemic K1 Youths K1 Children K1 Adolescents K1 Preschoolers AB Scientific literature has suggested positive associations between the Mediterranean diet (MD) and the health-related quality of life (HRQoL) in young populations. However, to our knowledge, this relationship is unexplored during a situation of social isolation (i.e., lockdown). The objective of the current study is to examine the relationship between the MD and HRQoL during the COVID-19 lockdown among preschoolers, children, and adolescents from Brazil and Spain. This cross-sectional study includes a sample of 1099 three- to seventeen-year-old participants (47.6% girls) who were recruited via social networks. The HRQoL was assessed with the EQ-5D-Y. The Quality Index for Children and Teenagers (KIDMED) questionnaire was applied to evaluate the relationship between the MD and HRQoL. The highest prevalence of reported problems was found for worried, sad, or unhappy participants (39.8%). Furthermore, the lowest proportion of HRQoL problems was observed for “mobility” (2.5%). The proportion of high adherence to the MD was 44.3%. Participants with greater MD adherence reported higher HRQoL mean scores when compared with those who did not adhere to the MD (83.7 ± 0.6 vs. 85.6 ± 0.7, respectively; p < 0.05). Adherence to the MD and especially daily fruit intake were related to higher HRQoL during the COVID-19 lockdown among Brazilian and Spanish young people aged three to seventeen years. PB MDPI YR 2023 FD 2023-01-29 LK https://hdl.handle.net/10433/20544 UL https://hdl.handle.net/10433/20544 LA en NO Victoria-Montesinos, D.; Tárraga-Marcos, A.; Brazo-Sayavera, J.; Jiménez-López, E.; Gutiérrez-Espinoza, H.; Panisello Royo, J.M.; Tárraga-López, P.J.; López-Gil, J.F. Adherence to the Mediterranean Diet and Health-Related Quality of Life during the COVID-19 Lockdown: A Cross-Sectional Study including Preschoolers, Children, and Adolescents from Brazil and Spain. Nutrients 2023, 15, 677. https://doi.org/10.3390/nu15030677 NO Departamento de Deporte e Informática. Universidad Pablo de Olavide. DS RIO RD May 8, 2026