Association between body mass index, muscle-to-fat ratio, and handgrip strength-to-BMI ratio with physical fitness in children from North Macedonia. - Llagjeviq-Govori, Arijana; Gontarev, Serjozha; Saiti, Agon; Novacevska, Slavica; Dimitrioska, Jana Karsakovska; Nedelkovski, Vlatko (Nutrición Hospitalaria, 2025)