Effect of Meals on Blood Glucose Level : Difference between Rice and Bread

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  • 食事が血糖値に及ぼす影響 －米飯食とパン食の差－
  • ショクジ ガ ケットウチ ニ オヨボス エイキョウ ベイハンショク ト パンショク ノ サ

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Rice is a staple Japanese traditional food, and Japanese foods are recommended to prevent obesity and diabetes. To clarify whether or not rice is a good food from the aspect of controlling the blood glucose level, rice was compared with bread. The subjects were 35 healthy females aged 19 - 20. They consumed a test food (about 350kca1) for 10 minutes. Blood samples were collected from their finger tips five times in total, ; while fasting, and 30, 60, 90, and 120 minutes after the meal. Samples were measured by a blood glucose meter. The results showed less than 110mg/dL of the blood glucose level while fasting in all subjects, indicating no abnormal glucose tolerance. The blood glucose levels at 60, 90 and 120 minutes after rice meals were significantly higher than those after bread meals. No significant difference between bread and rice was found in the subjects with body fat percentage of 30% or higher. Blood glucose levels at 60, 90, and 120 minutes after rice meals were significantly higher in subjects with less than 30% fat. Only subjects who ate a rice meal being compared, the subjects with less than 30% fat showed significantly higher levels at 30 minutes after a meal in contrast to the subjects with 30% or higher fat, but no such significant difference was found with bread. It was speculated that insulin resistance might be induced by the visceral fat in subjects with body fat percentage of 30% or higher.

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