School Food Trust, Great Smith St, London, UK.
J Hum Nutr Diet. 2011 Jun;24(3):223-32. doi: 10.1111/j.1365-277X.2010.01148.x. Epub 2011 Feb 21.
The Low Income Diet and Nutrition Survey described the food consumption and nutrient intake of UK children in low income households in 2003-2005.
To describe food consumption and nutrient intake associated with school meals and packed lunches, based on a cross-sectional analysis of 680, 24-h dietary recalls from 311 school children aged 4-11 years.
In children from low income households, pupils who took a packed lunch consumed more white bread, fats and oils, crisps and confectionery and fewer potatoes (cooked with or without fat) at lunchtime compared to other pupils. Many of these differences persisted when diet was assessed over the day. For younger pupils (4-7 years), packed lunches provided the least amount of folate, the highest amount of sodium, and the highest average percentage of food energy from fat and saturated fatty acids (SFA) compared to free school meals (FSMs). Over the whole day, in both younger (4-7 years) and older (8-11 years) children, there were no notable differences in energy or nutrient intake between those eating a packed lunch or a school meal. Older children's packed lunches contributed a significantly higher proportion of fat, SFA, calcium and sodium to the day's nutrient intake compared to a FSM.
In children from low income households, packed lunches are less likely to contribute towards a 'healthier' diet compared to a school meal. The difference was more apparent in younger children. Key differences were the high consumption of sodium, SFA and non-milk extrinsic sugars by pupils who had packed lunches.
《低收入家庭饮食与营养调查》(Low Income Diet and Nutrition Survey)描述了 2003-2005 年英国家庭收入较低的儿童的食物消费和营养摄入情况。
本研究通过对 311 名 4-11 岁在校儿童的 680 份 24 小时膳食回忆进行横断面分析,描述了与学校餐和自带午餐相关的食物消费和营养摄入情况。
在来自低收入家庭的儿童中,与其他学生相比,带自带午餐的学生在午餐时消耗了更多的白面包、脂肪和油、薯片和糖果,以及更少的土豆(带或不带脂肪烹饪)。当评估全天的饮食时,许多差异仍然存在。对于年龄较小的学生(4-7 岁),自带午餐提供的叶酸最少,钠含量最高,并且提供的食物脂肪和饱和脂肪酸(SFA)提供的平均能量百分比最高,而免费学校餐(FSMs)则提供的叶酸最多,钠含量最低,提供的食物脂肪和饱和脂肪酸(SFA)提供的平均能量百分比最低。在全天,无论是年龄较小(4-7 岁)还是较大(8-11 岁)的儿童,吃自带午餐或学校餐的儿童在能量或营养摄入方面没有明显差异。与 FSM 相比,年龄较大儿童的自带午餐为其全天的营养摄入贡献了更高比例的脂肪、SFA、钙和钠。
在来自低收入家庭的儿童中,自带午餐相较于学校餐,不太可能有助于形成更“健康”的饮食。对于年龄较小的儿童来说,这种差异更为明显。带自带午餐的学生摄入的钠、SFA 和非乳源性添加糖含量较高,这是主要差异。