The present study is a randomized school-based trial of a sample of 5th and 6th grade students from 10 public schools in the municipality of Duque de Caxias, metropolitan area of Rio de Janeiro, Brazil. The aim is to investigate whether adding nudging actions to the intervention group of PAAPPAS trial (PAAPAS Study, NCT02711488) increase fruits, vegetables and water consumption and daily energy expenditure, in a factorial design.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
1,000
Group 2 will receive classroom-based educational activities based on an earlier study, called PAPPAS, which was developed in the same city and constituted a school-based intervention with the objective of reducing the consumption of sweetened beverages and biscuits and increase the consumption of fruits, vegetables and beans
In group 3, changes in the environment will be included that will facilitate both physical activity and healthy food choices
Group 4 will receive both interventions
10 Schools of Metropolitan Area
Duque de Caxias, Rio de Janeiro, Brazil
Body Mass Index
Sample size of PAAPPAS Nudge was calculated based on a minimum effect of 0.15 in BMI variation and considering intra and intergroup comparisons. Body mass index (BMI) will be determined as a ratio between body weight (kg) and squared height (m).
Time frame: 6 months
Fruit consumption
Food intake will be assessed by a food frequency questionnaire validated for teenagers in Rio de Janeiro and one 24-hour recall (Rec24h). Netbooks containing a computer program developed for school use, based on a technique called "Multiple Pass Method" will be used.
Time frame: 6 months
Vegetable consumption
Vegetable consumption will be assessed by one 24-hour recall (Rec24h). The food items in the Rec24h will be transformed into daily consumption and grouped according to similary in nutritional containing
Time frame: 6 months
Water consumption
Water consumption will be assessed by a question regarding the number of glasses of water consumed during a day. Glasses of water consumed during a day will be assessed by a question at baseline and at the end of the study.
Time frame: 6 months
Physical activity
Physical activity levels will be measured through a validated questionnaire including six questions about frequency and time of different physical activities domains.
Time frame: 6 months
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