Payette H, Gray-Donald K
Department of Epidemiology and Biostatistics, McGill University, Montreal, Canada.
Am J Clin Nutr. 1991 Sep;54(3):478-88. doi: 10.1093/ajcn/54.3.478.
Nutritional status was assessed in 82 healthy, free-living elderly subjects aged 65-89 y through anthropometric measurements, a 7-d dietary record, and selected serum indicators. The percentage of elderly subjects reporting intakes below two-thirds of recommended intakes was highest for folate, vitamin D, calcium, magnesium, and zinc and varied from 23% to 72%. Of the nutritional indicators only serum zinc concentrations were deficient. The 7-d food record accurately classified individuals by usual or habitual intake for all nutrients except cholesterol. Dietary predictors of nutritional status were explored by using multiple regression. Iron status was predicted by protein and vitamin C intake and protein status, by dietary zinc. Serum concentrations of folate, vitamin C, and zinc were positively correlated to the dietary intake of the respective nutrients. The 7-d record was sufficiently precise to describe the intake of this healthy elderly population and to demonstrate evidence of clear relationships of dietary intake to serum nutritional indicators.
通过人体测量、7天饮食记录和选定的血清指标，对82名年龄在65 - 89岁的健康、自由生活的老年人的营养状况进行了评估。报告摄入量低于推荐摄入量三分之二的老年受试者比例，叶酸、维生素D、钙、镁和锌最高，在23%至72%之间。在营养指标中，只有血清锌浓度不足。7天食物记录除胆固醇外，能准确地根据所有营养素的通常或习惯摄入量对个体进行分类。通过多元回归探索营养状况的饮食预测因素。铁状态由蛋白质和维生素C摄入量预测，蛋白质状态由膳食锌预测。血清叶酸、维生素C和锌浓度与各自营养素的膳食摄入量呈正相关。7天记录足够精确，能够描述该健康老年人群的摄入量，并证明膳食摄入量与血清营养指标之间存在明确关系的证据。
