INS and metabolic syndrome: The dynamic, the static, and the total responsivity indices showed all the same trend of a lower beta-cell response (in effect less insulin secretion) in the MetS/T2D groups in both ethnicities: −191.9 × 10−9 (95% CI −282.2 to −101.6, P = 0.001), −12.1 × 10−9/min (95% CI −16.1 to −8.0, P = 0.001), and −14.3 × 10−9/min (95% CI −18.9 to −9.6, P = 0.001), respectively.