加拿大推荐营养素摄入量低估了中年女性的真实能量需求。
Canadian recommended nutrient intakes underestimate true energy requirements in middle-aged women.
作者信息
Jones P J, Martin L J, Su W, Boyd N F
机构信息
School of Dietetics and Human Nutrition, McGill University, Montreal, Quebec.
出版信息
Can J Public Health. 1997 Sep-Oct;88(5):314-9. doi: 10.1007/BF03403897.
To examine whether Health Canada's Recommended Nutrient Intakes (RNI) and FAO/WHO/UNU (Food and Agriculture Organization, World Health Organization, United Nations University) values provide accurate indices of true energy requirements, energy expenditure was determined using doubly labelled water (DLW) over 13 days in a group of 29 middle-aged women. Energy intakes were calculated from weighed food intake, and energy expenditures and intakes were then compared with individual calculated RNI requirements. The mean energy requirement as determined by DLW expenditure (9.56 +/- 0.53 MJ/d) was higher (p < 0.0001) than reported energy intake (7.08 +/- 0.30 MJ/d) and was higher (p < 0.004) than RNI mean energy requirement (7.97 +/- 0.18 MJ/d). The mean RNI for energy was also lower (p < 0.0001) than that derived from FAO data. These results suggest that current Health Canada RNIs are inadequate in predicting the energy needs of Canadian middle-aged women.
为了检验加拿大卫生部推荐营养素摄入量（RNI）以及粮农组织/世界卫生组织/联合国大学（FAO/WHO/UNU）的数值是否能准确反映真实能量需求，对一组29名中年女性采用双标水法（DLW）测定其13天的能量消耗。根据称重食物摄入量计算能量摄入量，然后将能量消耗和摄入量与个体计算得出的RNI需求进行比较。通过DLW消耗测定的平均能量需求（9.56±0.53兆焦/天）高于报告的能量摄入量（7.08±0.30兆焦/天）（p<0.0001），也高于RNI平均能量需求（7.97±0.18兆焦/天）（p<0.004）。能量的平均RNI也低于根据粮农组织数据得出的数值（p<0.0001）。这些结果表明，加拿大卫生部目前的RNI在预测加拿大中年女性的能量需求方面并不充分。
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