title: Glycaemic and insulin responses, glycaemic index and insulinaemic index values of rice between three Asian ethnic groups.
abstract: Asians exhibit larger glycaemic response (GR) and insulin response (IR) than Caucasians, predisposing to an increased risk of type 2 diabetes mellitus (T2DM). We aimed to determine the GR and IR as well as the glycaemic index (GI) and insulinaemic index (II) of two rice varieties among three ethnic groups in Singapore. A total of seventy-five healthy males (twenty-five Chinese, twenty-five Malay and twenty-five Asian-Indians) were served the available equivalent carbohydrate amounts (50 g) of test foods (Jasmine rice and Basmati rice) and a reference food (glucose) on separate occasions. Postprandial blood glucose and plasma insulin concentrations were measured at fasting ( -5 and 0 min) and at 15, 30, 45, 60, 90 and 120 min after food consumption. Using the trapezoidal rule, GR, IR, GI and II values were determined. The GR did not differ between ethnic groups for Jasmine rice and Basmati rice. The IR was consistently higher for Jasmine rice (P=0·002) and Basmati rice (P=0·002) among Asian-Indians, probably due to compensatory hyperinsulinaemia to maintain normoglycaemia. The GI and II of both rice varieties did not differ significantly between ethnicities. The overall mean GI for Jasmine rice and Basmati rice were 91 (sd 21) and 59 (sd 15), respectively. The overall mean II for Jasmine rice was 76 (sd 26) and for Basmati rice was 57 (sd 24). We conclude that the GI values presented for Jasmine rice and Basmati rice were applicable to all three ethnic groups in Singapore. Future studies should include deriving the II for greater clinical utility in the prevention and management of T2DM.
authors: Clinical Nutrition Research Centre, Singapore Institute for Clinical Sciences,A*STAR,Singapore.
authors: V M H
authors: VM
authors: Tan
authors: Clinical Nutrition Research Centre, Singapore Institute for Clinical Sciences,A*STAR,Singapore.
authors: T
authors: T
authors: Wu
authors: Clinical Nutrition Research Centre, Singapore Institute for Clinical Sciences,A*STAR,Singapore.
authors: C J
authors: CJ
authors: Henry
authors: Clinical Nutrition Research Centre, Singapore Institute for Clinical Sciences,A*STAR,Singapore.
authors: Y S
authors: YS
authors: Lee
mesh_terms: D000328:Adult; D019540:Area Under Curve; D044466:Asian People; D001786:Blood Glucose / Q000032:analysis; D015992:Body Mass Index; D002241:Carbohydrates / Q000737:chemistry; D018592:Cross-Over Studies; D003924:Diabetes Mellitus, Type 2 / Q000097:blood / Q000178:diet therapy; D005006:Ethnicity; D005504:Food Analysis; D038321:Glycemic Index; D006801:Humans; D006943:Hyperglycemia / Q000378:metabolism; D007328:Insulin / Q000097:blood*; D008297:Male; D012275:Oryza / Q000737:chemistry*; D019518:Postprandial Period; D012846:Singapore; D013997:Time Factors; D055815:Young Adult
chemical_list: D001786:Blood Glucose; D002241:Carbohydrates; D007328:Insulin
keywords: Asians