Prediction of postprandial glycemic exposure: Utility of fasting and 2-h glucose measurements alone and in combination with assessment of body composition, fitness, and strength

Ohad Cohen, Rita Basu, Gerlies Bock, Chiara Dalla Man, Marco Campioni, Ananda Basu, Gianna Toffolo, Claudio Cobelli, Robert A. Rizza

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

OBJECTIVE - To determine the best predictors of total postprandial glycemic exposure and peak glucose concentrations in nondiabetic humans. RESEARCH DESIGN AND METHODS - Data from 203 nondiabetic volunteers who ingested a carbohydrate-containing mixed meal were analyzed. RESULTS - Fasting glucose and insulin concentrations were poor predictors of postprandial glucose area above basal (R2 = ∼0.07, P < 0.001). The correlation was stronger for 2-h glucose concentration (R2 = 0.55, P < 0.001) and improved slightly but significantly (P < 0.001) with the addition of fasting glucose, insulin, age, sex, and body weight to the model (r2 = 0.58). The 2-h glucose concentration also predicted the peak glucose concentration (R 2 = 0.37, P < 0.001) with strength of the prediction increasing (P < 0.001) modestly with the addition of fasting glucose, insulin, age, sex, and body weight to the model (R2 = 0.48, P < 0.001). On the other hand, addition of measures of body function and composition did not improve prediction of total glycemic exposure or peak glucose concentration. CONCLUSIONS - Isolated measures of fasting or 2-h glucose concentrations alone or in combination with more complex measures of body composition and function are poor predictors of postprandial glycemic exposure or peak glucose concentration. This may explain, at least in part, the weak and at times inconsistent relationship between these parameters and cardiovascular risk.

Original languageEnglish (US)
Pages (from-to)2708-2713
Number of pages6
JournalDiabetes care
Volume29
Issue number12
DOIs
StatePublished - Dec 2006

ASJC Scopus subject areas

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism
  • Advanced and Specialized Nursing

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