Kokkerelli Learning Street Effect Evaluation

NCT04190680 | Completed Results

• 1 other identifier: 20191129
• Study Type: interventional
• Target: 226
• Locations: 1 country
• Sites: 1

Brief Summary

In 2012, the Kids University for Cooking Foundation BV has developed a nutrition education programme called 'Kokkerelli Learning Street'. This innovative programme aims to teach primary school students from study years 5-8 where food comes from, how it is processed, and how it can be used for the preparation of a healthy meal. The Kokkerelli Learning Street is offered to primary school children in the region of Venlo, the Netherlands. The present study will investigate the effects of the Kokkerelli Learning Street on several determinants of children's fruit and vegetable intake. Based on the literature and the aims of the Learning Street, five relevant determinants are selected: (i) knowledge; (ii) taste preferences; (iii) intention; (iv) skills; and (v) attitude. Using child-reported questionnaires, the present study aims to answer the following key questions: What are the short-term and longer-term effects of the Kokkerelli Learning Street on children's:

• Knowledge regarding fruit and vegetable consumption?
• Intentions regarding fruit and vegetable consumption?
• Attitude regarding fruit and vegetable consumption?
• Liking of fruit and vegetables?
• Skills regarding fruit and vegetable preparation?
• Fruit and vegetable intake?

Conditions

Fruit and Vegetable Consumption in Children

Keywords

Nutrition; Fruit and vegetables; School; Children; Prevention

Outcome Measures

Primary Outcomes (5)

• Change From Baseline Fruit and Vegetable Knowledge at 3 Months After the Evaluation Lesson

  Knowledge will be assessed by six knowledge questions in the child questionnaire. A total knowledge score based on the number of correct answers will be calculated. The minimum score that can be obtained is 0, indicating low knowledge. The maximum score that can be obtained is 6, indicating high knowledge.

  Baseline, directly after the evaluation lesson (approximately three weeks after baseline), three months after the evaluation lesson

• Change From Baseline Intention to Consume Fruit and Vegetables at Three Months After the Evaluation Lesson

  Questions assessing intention will concern participants' plans to consume or cook a meal containing the specific food product in the future and will be assessed on a scale from 1='I don't know' to 6='yes I will'. A mean score will be calculated to assess intention. The minimum score that can be obtained is 0, indicating low intention. The maximum score that can be obtained is 6, indicating high intention.

  Baseline, directly after the evaluation lesson (approximately three weeks after baseline), three months after the evaluation lesson

• Change From Baseline Attitude Towards Fruit and Vegetable (Consumption) at 3 Months After the Evaluation Lesson

  Questions for attitude ('How much do you think the target behaviours are clever/interesting and nice/cool/tasty?') will be used as described by Ajzen and Fishbein and as previously used in comparable research. They will have response options ranging from 1='no, not at all' to 5='yes, totally'. A mean score will be calculated to assess attitude.

  Baseline, directly after the evaluation lesson (approximately three weeks after baseline), three months after the evaluation lesson

• Change From Baseline Taste Preferences for Fruit and Vegetables at 3 Months After the Evaluation Lesson

  Three questions will be used for taste preferences (e.g., 'What do you think about the taste of the food product?') (scale from 1='never tried' to 6='I like it very much'). A mean score will be calculated to assess taste preferences.

  Baseline, directly after the evaluation lesson (approximately three weeks after baseline), three months after the evaluation lesson

• Change From Baseline Attitude Towards Healthy Food Products at 3 Months After the Evaluation Lesson

  Questions for attitude ('How much do you think the target behaviours are clever, interesting, nice, cool, and tasty?') will be used as described by Ajzen and Fishbein and as previously used in comparable research. They will have response options ranging from 1='no, not at all' to 5='yes, totally'. A mean score will be calculated to assess attitude.

  Baseline, directly after the evaluation lesson (approximately three weeks after baseline), three months after the evaluation lesson

Study Arms (2)

Kokkerelli Learning Street

EXPERIMENTAL

The classes included in this group will participate in the Kokkerelli Learning Street; a school-based nutrition education programme included classroom-based lessons, a visit to a grower's farm and a cooking workshop.

Behavioral: Kokkerelli Learning Street

Control group

NO INTERVENTION

The classes included in this group will not participate in the Kokkerelli Learning Street and will continue with their regular curriculum.

Interventions

Kokkerelli Learning Street BEHAVIORAL

The Kokkerelli Learning Street focusses on one specific food product (kale, tomato, asparagus, pepper, strawberry, blue berry, mushroom, carrot, or leek) and consists of multiple components: 1. An introduction lesson at school. Children are introduced to the product and familiarised with growing and harvesting processes and the importance of the product regarding health. 2. A visit to a grower's farm during which children are introduced to the precise planting, growing and harvesting procedures of the product. Children are allowed to enter the facilities (e.g., the greenhouse) and observe and experience the farming of the product. 3. A cooking workshop at the facilities of Kids University for Cooking BV. Children prepare a meal with help of volunteers. After preparing the meal, children help to set the table and consume their self-prepared meal. 4. An evaluation lesson at school. Children evaluate the Learning Street together with their peers and teacher.

Kokkerelli Learning Street

Eligibility Criteria

• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

• Student of study years five to eight of one of the predetermined primary schools

You may not qualify if:

• School classes who already participated in the Kokkerelli Learning Street during previous school years

Sponsors & Collaborators

• Maastricht University Medical Center: lead

Study Sites (1)

Kids University for Cooking

Venlo, Limburg, 5928 RC, Netherlands

Location

Results Point of Contact

• Title: Marla Hahnraths, MSc
• Organization: Maastricht University

mth.hahnraths@maastrichtuniversity.nl

433882184

Study Officials

• Marla Hahnraths, MSc

  PhD candidate

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: Yes
• Restrictive Agreement: No

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: The study will consist of one intervention group (several primary school classes that participate in the Kokkerelli Learning Street) and one control group (several primary school classes that don't participate in the Kokkerelli Learning Street and continue with their regular curriculum).

Study Record Dates

• First Submitted: December 3, 2019
• First Posted: December 9, 2019
• Study Start: March 15, 2020
• Primary Completion: August 31, 2022
• Study Completion: August 31, 2022
• Last Updated: December 16, 2025
• Results First Posted: December 16, 2025

Record last verified: 2023-09

Data Sharing

• IPD Sharing: Will not share

Locations

NL (1)