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交通灯标签和饮食行为变化:一项随机临床试验
Hongwei Liu1, Zihan Hu1, Qi Song2
1School of Public Health, Fudan University, Shanghai, China.
JAMA network open
|May 19, 2025
概括
公司自助餐厅的交通灯标签 (TLL) 并没有显著改善饮食中的糖,脂肪或摄入量. 这些标签也未能改变参与者的饮食选择,这表明在这种情况下的有效性有限.
科学领域:
- 营养科学 营养科学
- 公共卫生 公共卫生
- 行为科学 行为科学
背景情况:
- 交通灯标签 (TLL) 被用来指导更健康的食物选择.
- 在现实世界的餐饮环境中,关于TLL有效性的证据是不一致的.
- 之前的研究没有明确确定TLL对饮食摄入量和选择的影响.
研究的目的:
- 评估TLL对饮食消费和食物选择的影响.
- 评估在中国公司食堂设置中TLL的有效性.
- 分析对摄入添加糖,脂肪和的影响.
主要方法:
- 一个双臂,并行随机临床试验在上海公司食堂进行.
- 153名成年参与者被随机分配到干预组 (有TLL) 和对照组 (没有TLL).
- 通过一个小程序监测饮食摄入量和选择,分析每周的中位数值.
主要成果:
- 两组之间在添加糖,脂肪或的摄入量方面没有发现统计学上显著的差异.
- 干预组的饮食选择没有显著变化,包括绿色,黄色或红色编码菜的数量.
- 平均交通信号灯得分也显示干预组和对照组之间没有显著差异.
结论:
- 菜单上的TLL并没有导致饮食消费或公司食堂的选择显著改善.
- 这些发现表明,在类似的环境中,TLLs可能无法有效地促进饮食改善.
- 可能需要进一步的研究来探索影响TLL有效性的因素.
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