Nudging: How Small Changes in the Cafeteria of the Feiring Heart Clinic Can Result in a Healthier Food Choice.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 144
- 试验地点
- 2
- 主要终点
- Change in BMI from start of intervention to end of intervention
研究概览
简要总结
This study will investigate whether small changes (nudges) made in a cafeteria, where participants eat for 4 weeks, can improve their food behavior and health during the 4 weeks, and 6 weeks and 6 months after their stay. Half the participants will be exposed to one of four types of nudges (focused on reducing salt intake, increasing vegetable intake, reducing portion size, and a combination of these nudges), and half of the participants will eat in the cafeteria as it is currently, without modifications.
详细描述
A healthy diet is an important pillar for public health and for the prevention of several lifestyle diseases (e.g. obesity, cardiovascular diseases). However, diet choices are often not conscious choices. While it may help to make individuals more aware of healthy options for example through education or nutrition labels, it remains difficult for many to eat healthy. The food environment in which choices are made has an impact on the choice. Smart design of the food environment may help individuals to make a healthier choice, by nudging them towards the healthier alternative, while not limiting the availability of the less healthy choice.
This study tests how these 'nudges' can affect food behavior and health of participants in a 4-week rehabilitation course at Feiring Heart clinic. Nudges will be implemented in the cafeteria at the clinic.
Three types of nudges will be tested:
- Salt nudge: aims to reduce salt (sodium) intake. Salt will be less easily available in the cafeteria, and other spices (without sodium) will be made easily available. Food in the buffet that is either very high or very low in salt will be labeled.
- Vegetable nudge: aims to increase vegetable intake. Names of the vegetable dishes in the buffet will be made more attractive, signs will be placed with reminders to eat more vegetables, and with visual indications of the percentage of vegetables that should be part of a meal.
- Portion size nudge: aims to decrease portion size. Smaller plates will be provided, and utensils for self-serving calorie-dense foods in the buffet will be smaller than normal.
- One period will also combine all the nudges described above.
Outcomes include measures of food intake during the 4-week rehabilitation course, and whether food habits 6 weeks and 6 months after the 4-week course have changed, compared to before the course. BMI will be monitored during the 4-week period and self-assessed in the 6 months after. Physical activity habits will be considered during the entire experimental period, and satisfaction with the cafeteria food and service will be monitored throughout to assess whether the nudges impact customer satisfaction.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Single Group
- 主要目的
- Supportive Care
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Participants should be part of the 4 week rehabilitation course at the Feiring heart clinic
- •Participants should be willing and able to complete the necessary registration of food choices, and the relevant questionnaires
排除标准
- 未提供
研究组 & 干预措施
Salt nudge
The following changes will be made in the cafeteria: Salt will be placed in a corner of the buffet, rather than on each dining table. Other spices, without sodium, will be provided on the table. A sign will be placed on the table that nudges participants to try the other spices. Food in the buffet that is high in salt will be labeled with a negative-appearing symbol, and food in the buffet that is low in salt will be labeled with a positive symbol.
干预措施: Nudged to eat less added salt and more other seasonings (Behavioral)
Salt nudge
The following changes will be made in the cafeteria: Salt will be placed in a corner of the buffet, rather than on each dining table. Other spices, without sodium, will be provided on the table. A sign will be placed on the table that nudges participants to try the other spices. Food in the buffet that is high in salt will be labeled with a negative-appearing symbol, and food in the buffet that is low in salt will be labeled with a positive symbol.
干预措施: Nudged to avoid foods high in salt content, and to choose foods low in salt content (Behavioral)
Vegetable nudge
The following changes will be made in the cafeteria: Names of the vegetable dishes in the buffet will be made more attractive. Signs will be placed with reminders to eat more vegetables. Signs will be placed with a visual indication of the percentage of a meal that should consist of vegetables.
干预措施: Nudged to eat more vegetables (Behavioral)
Portion size nudge
The following changes will be made in the cafeteria: Smaller plates will replace the regular plates. Verbal and visual nudges to reduce portion size will be given. Utensils for self-serving calorie-dense foods in the buffet will be smaller than normal.
干预措施: Nudged to eat smaller portions (Behavioral)
Portion size nudge
The following changes will be made in the cafeteria: Smaller plates will replace the regular plates. Verbal and visual nudges to reduce portion size will be given. Utensils for self-serving calorie-dense foods in the buffet will be smaller than normal.
干预措施: Nudged to eat less calorie-dense food (Behavioral)
Combined nudge
All three nudges are combined in this intervention.
干预措施: Nudged to eat less added salt and more other seasonings (Behavioral)
Combined nudge
All three nudges are combined in this intervention.
干预措施: Nudged to avoid foods high in salt content, and to choose foods low in salt content (Behavioral)
Combined nudge
All three nudges are combined in this intervention.
干预措施: Nudged to eat more vegetables (Behavioral)
Combined nudge
All three nudges are combined in this intervention.
干预措施: Nudged to eat smaller portions (Behavioral)
Combined nudge
All three nudges are combined in this intervention.
干预措施: Nudged to eat less calorie-dense food (Behavioral)
Control groups
No changes are made to the cafeteria, compared to the pre-study situation. One control group participates after each of the nudges to control for effects of time of the year.
结局指标
主要结局
Change in BMI from start of intervention to end of intervention
时间窗: Measured at baseline at day 0 of intervention and at completion of intervention at day 28 of intervention)
BMI is measured, and change in BMI between day 0 and day 28 is used.
Change in dietary habits 1
时间窗: 6 weeks after the 4 week intervention period
Habits are compared with habits as listed before the start of the 4 week intervention period. Done through an online survey.
Change in dietary habits 2
时间窗: 6 months after the 4 week intervention period
Habits are compared with habits as listed before the start of the 4 week intervention period. Done through an online survey.
次要结局
- Dietary choices in cafeteria 1.1(Tuesday lunch meal during the first week of the intervention)
- Dietary choices in cafeteria 1.2(Thursday lunch meal during the first week of the intervention)
- Dietary choices in cafeteria 2.1(Tuesday lunch meal during the second week of the intervention)
- Dietary choices in cafeteria 2.2(Thursday lunch meal during the second week of the intervention)
- Dietary choices in cafeteria 3.1(Tuesday lunch meal during the third week of the intervention)
- Dietary choices in cafeteria 4.1(Tuesday lunch meal during the fourth week of the intervention)
- Dietary choices in cafeteria 3.2(Thursday lunch meal during the third week of the intervention)
- Dietary choices in cafeteria 4.2(Thursday lunch meal during the fourth week of the intervention)