Between-class variation and compositional correlates of physical fitness, and the concordance of composite scores with BMI-defined abnormality: a multilevel analysis of annual surveillance records from one Chinese university
Introduction This repeated cross-sectional retrospective study examined between-class variation in university students’ physical-fitness scores and whether annual composite-score trends were concordant with changes in BMI-defined abnormality. Methods Annual surveillance records collected from 2020 to 2024 at one public...