Overweight adolescents Nutritional, Metabolic, Endocrine Obesity, unspecified
Conditions
Interventions
DOiT is a school-based overweight prevention program for 12 to 14-year olds. DOiT focuses on five EBRBs:
1. Reducing intake of sugar-sweetened beverages
2. Reducing intake of high-energy snacks
3. Re
Sponsors
SNS REAAL Fonds (Netherlands)
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Participating schools need to meet the following criteria: 1. Willing to implement DOiT during 2 subsequent school years 2. A signed agreement of participation in the study during that period (2011-2013) 3. Willingness to appoint a DOiT coordinator who will be the linking agent between the research team and the school 4. Being able to participate with at least 3 classes of the first two years of their pre-vocational education 5. Willingness to provide space and time for measurements. There are no individual inclusion criteria for study participation.
Exclusion criteria
Exclusion criteria: Does not meet inclusion criteria
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary outcome is the dissemination process measured by teacher questionnaires, logbooks and interviews. Teacher questionnaire At baseline, 10 months and 20 months, all teachers involved in the implementation of DOiT are asked to complete an online questionnaire about the impeding and facilitating factors of the implementation of DOiT. The majority of the questionnaire consists of structured questions, measured on a bipolar five-point Likert scale. A few open-ended questions are added. The questionnaire is based on existing questionnaires, used in the previous DOiT evaluation and the Krachtvoer evaluation study. The questionnaire contains questions regarding the context, recruitment, satisfaction, maintenance, and potential relevant implementation-related determinants of the program. Additionally, the questionnaire contains items on other ongoing studies and other innovations or school health-promotion programs. Teacher logbook After each lesson teachers are requested to complete an online log. Completing the log takes approximately 5 minutes per lesson. Using this log, we aim to administer completeness of implementation by having teachers indicate if the lesson was taught, when it was taught and how the lesson was prepared and implemented. Teachers can tick off what activities were executed in preparation of the lesson on a list of proposed activities according to the teacher manual and how much time they spend on these activities. Teachers tick off what materials were used during the lesson, what lesson activities were implemented and if the implementation complied with the prescription in the teacher manual. Finally, teachers report how much time they spent in the classroom and rate their satisfaction with the lesson on a ten point rating scale. Interview At the end of each school year, i.e. in total two times during the research period, a sub-group of teachers and the coordinator are invited for an in-depth interview to gain more insight into the impl | — |
Secondary
| Measure | Time frame |
|---|---|
| The secondary outcome is the effect of the program on the students' objectively measured body mass index, skinfold thickness and waist circumference and self-reported energy balance-related behaviours among students. Body composition Before the start of DOiT and after 20 months, we measure body weight, body height, skinfold thickness, waist and hip circumference. 1. Body weight is measured and recorded within 0.1 kg with a calibrated electronic flat scale (Seca 888). 2. Body height is measured and recorded with an accuracy of 1 mm using a portable stadiometer. 3. Skinfold thickness (i.e. m.triceps, m.biceps, m.suprailiacalis, m.subscapularis) is measured on the left side of the body to the nearest 0.2 mm 4. Waist and hip ratio are measured with a Seca 206 waist circumference measure (Seca, Hamburg, Germany) to accuracy of 0.5 cm Energy balance-related behaviours Before the start of DOiT and after 20 months, students are asked to complete the DOiT questionnaire in a classroom. The DOiT questionnaire addresses the following EBRBs: 1. Consumption of sugar-sweetened beverages 2. Consumption of high sugar/high fat snacks 3. Physical activity (sports and active transport) 4. Screen time (TV viewing and computer use) 5. Breakfast behaviour | — |
Countries
Netherlands
Outcome results
None listed