Daily protein intakes and eating patterns in young and elderly French
Daily protein intakes and eating patterns in young and elderly French
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DOI：
10.1079/bjn20031004
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发表时间：
2003-12-01
影响因子：
3.6
通讯作者：
Boirie, Y
中科院分区：
文献类型：
--
作者：
Rousset, S;Mirand, PP;Boirie, Y
需要足够的蛋白质摄入量，以限制在衰老过程中观察到的身体蛋白质的逐渐丧失。不同的因素(年龄、性别、生活条件)可能会影响蛋白质的摄入量和分布。然而，对年轻人和老年人来说，影响蛋白质利用和氮保留的准确数量及其每日分布都是未知的。对这一假设进行了检验，即年轻人和老年人的蛋白质摄入量及其在日常膳食中的分布可能不同。292名年龄在20-30岁和65-75岁的健康人在一周的时间里每天摄入六种不同的富含蛋白质的食物。以年龄组为独立因素，对每餐总蛋白质摄入量和每餐蛋白质摄入量数据进行单因素方差分析。男性的平均蛋白质摄入量在老年人群中较低，而女性的趋势则相反。蛋白质摄入量在两个年龄组之间的分布不同：老年人每天午餐蛋白质摄入量的56.5%，而年轻人只有47%(P<；0.0001)。在老年受试者中，进食量大的人在晚餐中摄入的富含蛋白质的食物比例高于吃少量食物的人(30.4vs26.2%，P=0.05)。在老年人和年轻人中，高蛋白质摄入量与较高的肉制品消费量有关。总而言之，不同年龄段和不同性别之间的蛋白质摄取模式有很大差异。
An adequate level of protein intake is required to limit the gradual body protein loss observed during ageing. Different factors (cohort age, sex, life conditions) may modify protein intake and distribution. However the precise amounts, as well as their daily distribution which affects protein utilisation and N retention, are unknown in both young and elderly individuals. The hypothesis was tested that protein intake and its distribution over daily meals could be different between the young and elderly. The consumption of six different protein-rich food groups by 292 healthy individuals aged 20-30 and 65-75 years was determined throughout each day for 1 week. The data of the total protein intake and protein intakes at each meal were analysed by ANOVA for each sex separately, using age group as the independent factor. The average protein intake of men was lower in the older age group whilst the opposite trend was seen in women. The distribution of protein intake was different between the two age groups: 56.5 % of the daily protein was eaten at lunch by the elderly but only 47 % (P< 0.0001) by the younger subjects. In the elderly subjects, those eating larger amounts consumed a greater proportion of protein-rich foods at dinner than those eating small amounts (30.4 v. 26.2 %, P=0.05). A high level of protein intake was related to a higher meat-product consumption in both the elderly and young individuals. In conclusion, the pattern of protein intake differs significantly between age groups and sexes.