Dietary Glycemic Index and Glycemic Load, Carbohydrate and Fiber Intake, and Measures of Insulin Sensitivity, Secretion, and Adiposity in the Insulin Resistance Atherosclerosis Study

@article{citeulike:2744306, abstract = {OBJECTIVE--We studied the association of digestible carbohydrates, fiber intake, glycemic index, and glycemic load with insulin sensitivity (SI), fasting insulin, acute insulin response (AIR), disposition index, BMI, and waist circumference. RESEARCH DESIGN AND METHODS--Data on 979 adults with normal (67\%) and impaired (33\%) glucose tolerance from the Insulin Resistance Atherosclerosis Study (1992-1994) were analyzed. Usual dietary intake was assessed via a 114-item interviewer-administered food frequency questionnaire from which nutrient intakes were estimated. Published glycemic index values were assigned to food items and average dietary glycemic index and glycemic load calculated per subject. SI and AIR were determined by frequently sampled intravenous glucose tolerance test. Disposition index was calculated by multiplying SI with AIR. Multiple linear regression modeling was employed. RESULTS--No association was observed between glycemic index and SI, fasting insulin, AIR, disposition index, BMI, or waist circumference after adjustment for demographic characteristics or family history of diabetes, energy expenditure, and smoking. Associations observed for digestible carbohydrates and glycemic load, respectively, with SI, insulin secretion, and adiposity (adjusted for demographics and main confounders) were entirely explained by energy intake. In contrast, fiber was associated positively with SI and disposition index and inversely with fasting insulin, BMI, and waist circumference but not with AIR. CONCLUSION--Carbohydrates as reflected in glycemic index and glycemic load may not be related to measures of insulin sensitivity, insulin secretion, and adiposity. Fiber intake may not only have beneficial effects on insulin sensitivity and adiposity, but also on pancreatic functionality. 10.2337/diacare.28.12.2832}, author = {Liese, Angela D. and Schulz, Mandy and Fang, Fang and Wolever, Thomas M. and D'Agostino, Ralph B. and Sparks, Karen C. and Mayer-Davis, Elizabeth J. }, citeulike-article-id = {2744306}, doi = {10.2337/diacare.28.12.2832}, journal = {Diabetes Care}, keywords = {atherosclerosis, glycemic\_index, glycemic\_load, higea, insulin\_resistance, insulin\_secretion, insulin\_sensitivity}, month = {December}, number = {12}, pages = {2832--2838}, posted-at = {2008-05-02 08:05:25}, priority = {2}, title = {Dietary Glycemic Index and Glycemic Load, Carbohydrate and Fiber Intake, and Measures of Insulin Sensitivity, Secretion, and Adiposity in the Insulin Resistance Atherosclerosis Study}, url = {http://dx.doi.org/10.2337/diacare.28.12.2832}, volume = {28}, year = {2005} }

TY - JOUR ID - citeulike:2744306 L3 - citeulike-article-id:2744306 TI - Dietary Glycemic Index and Glycemic Load, Carbohydrate and Fiber Intake, and Measures of Insulin Sensitivity, Secretion, and Adiposity in the Insulin Resistance Atherosclerosis Study JF - Diabetes Care VL - 28 IS - 12 SP - 2832 EP - 2838 N2 - OBJECTIVE--We studied the association of digestible carbohydrates, fiber intake, glycemic index, and glycemic load with insulin sensitivity (SI), fasting insulin, acute insulin response (AIR), disposition index, BMI, and waist circumference. RESEARCH DESIGN AND METHODS--Data on 979 adults with normal (67%) and impaired (33%) glucose tolerance from the Insulin Resistance Atherosclerosis Study (1992-1994) were analyzed. Usual dietary intake was assessed via a 114-item interviewer-administered food frequency questionnaire from which nutrient intakes were estimated. Published glycemic index values were assigned to food items and average dietary glycemic index and glycemic load calculated per subject. SI and AIR were determined by frequently sampled intravenous glucose tolerance test. Disposition index was calculated by multiplying SI with AIR. Multiple linear regression modeling was employed. RESULTS--No association was observed between glycemic index and SI, fasting insulin, AIR, disposition index, BMI, or waist circumference after adjustment for demographic characteristics or family history of diabetes, energy expenditure, and smoking. Associations observed for digestible carbohydrates and glycemic load, respectively, with SI, insulin secretion, and adiposity (adjusted for demographics and main confounders) were entirely explained by energy intake. In contrast, fiber was associated positively with SI and disposition index and inversely with fasting insulin, BMI, and waist circumference but not with AIR. CONCLUSION--Carbohydrates as reflected in glycemic index and glycemic load may not be related to measures of insulin sensitivity, insulin secretion, and adiposity. Fiber intake may not only have beneficial effects on insulin sensitivity and adiposity, but also on pancreatic functionality. 10.2337/diacare.28.12.2832 KW - atherosclerosis KW - glycemic_index KW - glycemic_load KW - higea KW - insulin_resistance KW - insulin_secretion KW - insulin_sensitivity AU - Liese, Angela AU - Schulz, Mandy AU - Fang, Fang AU - Wolever, Thomas AU - D'Agostino, Ralph AU - Sparks, Karen AU - Mayer-Davis, Elizabeth PY - 2005/12/01/ UR - http://dx.doi.org/10.2337/diacare.28.12.2832 ER -