Sagittal abdominal diameter resembles waist circumference as a surrogate marker of insulin resistance in adolescents—Brazilian Metabolic Syndrome Study

Objective To evaluate the association of the sagittal abdominal diameter (SAD) with insulin resistance (IR) and metabolic syndrome (MetS) components, and to compare SAD with waist circumference (WC). Subjects/Methods This was a multicenter, cross‐sectional study of 520 adolescents (10‐ to 18‐years old). IR was assessed using the homeostasis model assessment of IR (HOMA‐IR) and the hyperglycaemic clamp (n = 76). Results SAD and WC were positively correlated with HOMA‐IR (r = 0.637 and r = 0.653) and inversely correlated with the clamp‐derived insulin sensitivity index (ISI) (r = −0.734 and r = −0.731); P