Duran I, et al. - In this monocentric retrospective analysis of children and adolescents with cerebral palsy (CP) participating in a rehabilitation program, researchers assessed skeletal muscle mass using total lean BMI (LBM/height²) (LMI_tot) and appendicular lean mass index (LMI_app). For the analysis, 329 children with CP (148 females; Gross Motor Function Classification Scale [GMFCS] I, 32 children; GMFCS II, 73 children; GMFCS III, 133 children; GMFCS IV, 78 children; and GMFCS V, 13 children) met the eligibility criteria. The mean age of the sample was 12.3 ± 2.75 years. The possible underestimation of the prevalence of low skeletal muscle mass by LMI_tot in children with CP was suggested in this study. In children with CP, the more appropriate tool for the assessment of skeletal muscle mass is LMI_app.