Impact on Drinking Behaviour in Sixth-grade Students Through Changing the School Environment

Special Institute for Preventive Cardiology And Nutrition

Status: Terminated

Conditions: Students of the 6. Grade

Treatments: Dietary Supplement: sugar reduction

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT04165304

Version 1.4

Details and patient eligibility

About

This study evaluates the effect of changes in the range of drinks offered in vending machines in schools on the sugar intake of pupils via drinks.

Full description

Children and adolescents consume a considerable amount of liquid in the form of sugary drinks. A high sugar diet associated not only with the increase in overweight children, but also with type II diabetes, cardiovascular disease and cancer.

In many schools, cold drink vending machines with different fillings are available offering various sugary drinks.

Participating schools will be randomised in a ratio of 1:1:1 into three groups. In one intervention group, the vending machines will be re-equipped to contain 60% drinks containing a maximum of 6.7g sugar/100ml, 20% drinks containing more than 6.7g sugar/100ml and 20% water. In the second intervention group, the vending machines offer 80% water, 20% products with a maximum of 6.7g sugar/100ml. In the control group, the range of products offered by the vending machines remains unchanged. Information of the students drinking habits, total fluid intake and sugar intake in the form of food and drinks will be collected. In addition, data such as body height, body weight, physical activity and socio-democratic or socio-economic data will be accumulated. The sales figures of the drinks in the vending machines will be recorded and information about the surroundings of the schools (fast food chains, supermarkets, etc.) will be collected.

The survey of students and data collection will be repeated three times. In a sub-study, demographic data and the frequency of consumption of sugared beverages and water are collected from 2 focus groups. In addition, participants will complete a questionnaire on general attitudes towards sugary drinks or water, obstacles to and incentives for reducing sugar consumption by liquids or increasing water consumption.

Enrollment: 431 patients

Sex: All

Ages: 11 to 13 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Students in one of the recruited schools
• Appropriate knowledge of the German language

Exclusion criteria

• No signed consent of parent and of child

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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431 participants in 3 patient groups

control

No Intervention group

Description:

the range of products offered by the vending machines remains unchanged

Intervention group 1

Other group

Description:

vending machines will be re-equipped to contain 60% drinks containing a maximum of 6.7g sugar/100ml, 20% drinks containing more than 6.7g sugar/100ml and 20% water

Treatment:

Dietary Supplement: sugar reduction

Intervention group 2

Other group

Description:

In the second intervention group, the vending machines offer 80% water and 20% products with a maximum of 6.7g sugar/100ml.

Treatment:

Dietary Supplement: sugar reduction