期刊
EUROPEAN JOURNAL OF CLINICAL NUTRITION
卷 61, 期 8, 页码 986-995出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.ejcn.1602610
关键词
dietary fiber intake; dietary glycemic index; dietary glycemic load; body mass index; Japanese women; epidemiology
Objective: Few observational studies have investigated dietary fiber intake and dietary glycemic index (GI) and glycemic load (GL) simultaneously in relation to obesity, particularly in non-Western populations. We examined the associations between dietary fiber intake and dietary GI and GL, and body mass index (BMI) in young Japanese women. Design: Cross-sectional study. Subjects: A total of 3931 female Japanese dietetic students aged 18-20 years from 53 institutions in Japan. Methods: Dietary fiber intake and dietary GI and GL ( GI for glucose 100) were assessed by a validated, self-administered, diet history questionnaire. BMI was calculated from self-reported body weight and height. Results: Mean values of BMI, dietary fiber intake, dietary GI and dietary GL were 21.0 kg/m(2), 6.5 g/4186 kJ, 65.1 and 82.1/4186 kJ, respectively. White rice ( GI 77) was the major contributor to dietary GI and GL (45.8%). After controlling for potential dietary and nondietary confounding factors, dietary fiber intake was negatively correlated with BMI ( adjusted mean 21.1 kg/m2 in the lowest and 20.7 kg/m(2) in the highest quintiles; P for trend 0.0007). Conversely, dietary GI and GL were independently positively correlated with BMI ( 20.8 and 21.2 kg/m(2); P for trend 0.03, and 20.5 and 21.5 kg/m(2); P for trend 0.0005, respectively). Conclusions: Dietary fiber intake showed an independent negative association with BMI, and dietary GI and GL showed an independent positive association with BMI among relatively lean young Japanese women.
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