Bournemouth University, Poole, UK.
Nutr Health. 2024 Jun;30(2):269-278. doi: 10.1177/02601060221111234. Epub 2022 Jul 12.
Dietary guidelines are intended to inform and aid the general public, with the aim of improving healthy diets and reducing health risk. The effectiveness of these guidelines, however, is rarely investigated.
This work investigates the effects of three different types of dietary recommendations for reducing free sugars, on free sugar intakes over 12 weeks. Secondary aims will also investigate how these different recommendations affect secondary outcomes, outcomes in subsets of the trial population, and identify barriers and facilitators to dietary change.
Using a randomised controlled parallel-group trial with three intervention and one control arms, 240 individuals consuming >5% total energy intake from free sugars will be randomized to receive: nutrient-based, nutrient- and food-based, nutrient-, food- and food-substitution-based recommendations or no recommendations, with outcomes assessed for the following 12 weeks. Our primary outcomes are free sugar intakes and adherence to the recommendations. Secondary outcomes are daily energy intake, dietary composition, anthropometry, sweet food perceptions and preferences, sweet food choice, attitudes towards sweet foods, eating behaviour and food choice, knowledge and lifestyle variables, quality of life, adverse events, and barriers and facilitators towards intervention adherence.
Data will contribute to three distinct analyses: 1) Analyses to investigate the effects of the three different dietary recommendations versus control; 2) Analyses of the effects of the dietary recommendations in different population subgroups, and 3) Investigation of the barriers and facilitators to success.
This work offers new perspectives on the effects of different dietary recommendations to enact behaviour change.
饮食指南旨在为公众提供信息和帮助，旨在改善健康饮食，降低健康风险。然而，这些指南的有效性很少被调查。
这项工作调查了三种不同类型的减少游离糖的饮食建议在 12 周内减少游离糖摄入量的效果。次要目标还将调查这些不同建议如何影响次要结果、试验人群亚组的结果，并确定饮食改变的障碍和促进因素。
采用随机对照平行组试验，设三个干预组和一个对照组，将 240 名摄入游离糖>总能量摄入 5%的个体随机分为接受以下建议的组：基于营养素、基于营养素和食物、基于营养素、食物和食物替代的建议或无建议，在接下来的 12 周内评估结果。我们的主要结果是游离糖摄入量和对建议的依从性。次要结果是每日能量摄入、饮食成分、人体测量、甜食感知和偏好、甜食选择、对甜食的态度、饮食行为和食物选择、知识和生活方式变量、生活质量、不良事件以及干预依从性的障碍和促进因素。
数据将用于三项独立分析：1）分析三种不同饮食建议与对照组相比的效果；2）分析饮食建议在不同人群亚组中的效果；3）调查成功的障碍和促进因素。
这项工作为不同饮食建议对行为改变的影响提供了新的视角。
