• IEEE Trans Biomed Eng · Mar 2006

    A new dynamic index of insulin sensitivity.

    • Gianluigi Pillonetto, Andrea Caumo, Giovanni Sparacino, and Claudio Cobelli.
    • Department of Information Engineering, University of Padova, 35131 Padova, Italy.
    • IEEE Trans Biomed Eng. 2006 Mar 1;53(3):369-79.

    AbstractInsulin sensitivity is a crucial parameter of glucose metabolism. The standard measures of insulin sensitivity obtained by an euglycaemic hyperinsulinaemic clamp, Si(clamp), or by the minimal model (MM), SI, do not account for the dynamics of insulin action, i.e., how fast or slow insulin action reaches its plateau value. This is an important physiological information. In this paper we formally define a new insulin sensitivity index which also incorporates information on the dynamics of insulin action, SD(I), show its properties, and exemplify how it can be measured both with the clamp and the MM method. Then, by resorting to real and synthetic data, we show both in IVGTT MM and clamp studies why this new index SD(I) offers, in comparison with SI, a more comprehensive picture of the control of insulin on glucose.

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