Dietary energy density is associated with overweight status among 5 ethnic groups in the Multiethnic Cohort Study
Dietary energy density is associated with overweight status among 5 ethnic groups in the Multiethnic Cohort Study
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DOI：
10.1093/jn/136.8.2243
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发表时间：
2006-08-01
影响因子：
4.2
通讯作者：
Kolonel, Laurence N.
中科院分区：
文献类型：
--
作者：
Howarth, Nancy C.;Murphy, Suzanne P.;Kolonel, Laurence N.
不同种族之间体重指数的差异可能部分是由于高能量食物的消耗造成的，在受控实验室研究中，高能量食物会影响能量摄入。然而，饮食能量密度（ED，kJ/g）对于自由生活的人的作用尚不清楚。我们的目标是确定 ED 是否与当前 BMI 以及超重和肥胖风险相关，以及这些关系在不同种族群体中是否一致。我们根据定量食物频率调查问卷的回答计算了 ED，并针对多次 24 小时回忆验证了这些措施。受试者包括夏威夷-洛杉矶多种族队列中的 191,023 名参与者，他们是非裔美国人、夏威夷原住民、日裔美国人、拉丁裔或白种人。日裔美国男性的平均 ED 值最低为 4.62 kJ/g，非洲裔美国男性的平均 ED 最高为 5.08 kJ/g。日裔美国人的平均体重指数最低，夏威夷原住民男性和非裔美国女性的平均体重指数最高。在调整了每天摄入的食物量、年龄、当前吸烟状况、体力活动、慢性疾病和教育程度后，每个种族性别组中 ED 每增加 1 kJ/g 与 BMI 增加约 1 kg/m(2) 相关。 ED 的增加与所有种族性别群体的超重风险显着增加相关，从非洲裔美国男性的 4% 到日裔美国女性的 34% 不等。我们的研究结果表明，对于不同种族的男性和女性来说，摄入高能量饮食是导致 BMI 较高的危险因素。
Differences in BMI among ethnic groups may be partially explained by the consumption of energy-dense foods, which influences energy intake in controlled laboratory studies. However, the role of dietary energy density (ED, kJ/g) in free-living persons is less understood. Our objective was to determine whether ED is related to current BMI and the risk for overweight and obesity and whether these relations are consistent among ethnic groups. We calculated ED from responses to a quantitative food frequency questionnaire and validated the measures against multiple 24-h recalls. Subjects consisted of 191,023 participants in the Hawaii-Los Angeles Multiethnic Cohort who were African American, Native Hawaiian, Japanese American, Latino, or Caucasian. Mean ED varied from a low of 4.62 kJ/g in Japanese American men to a high of 5.08 kJ/g in African American men. Mean BMI was lowest in Japanese Americans of both sexes and highest in Native Hawaiian men and African American women. After adjusting for the amount of food consumed per day, age, current smoking status, physical activity, chronic disease, and education, a 1 kJ/g increase in ED was associated with an increase in BMI of similar to 1 kg/m(2) in each ethnic sex group. This same increase in ED was associated with a significantly increased risk of being overweight in all ethnic sex groups, varying from 4% in African American men to 34% in Japanese American women. Our findings suggest that consumption of an energy dense diet is a risk factor for higher BMI in both men and women across ethnic groups.