Dutch Obesity Intervention in Teenagers: a school-based intervention program to improve dietary and physical activity behaviour in adolescents, in order to prevent excessive weight gain
| ISRCTN | ISRCTN87127361 |
|---|---|
| DOI | https://doi.org/10.1186/ISRCTN87127361 |
| Protocol serial number | 2000T203 |
| Sponsor | The Netherlands Heart Foundation (NHF) (The Netherlands) |
| Funder | The Netherlands Heart Foundation (NHF) (The Netherlands) (ref: 2000T203) |
- Submission date
- 25/05/2005
- Registration date
- 04/07/2005
- Last edited
- 22/07/2015
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Nutritional, Metabolic, Endocrine
Plain English summary of protocol
Not provided at time of registration
Contact information
Scientific
van der Boechorststraat 7
Amsterdam
1081 BT
Netherlands
| Phone | +31 (0)20 4448203 |
|---|---|
| m.chinapaw@vumc.nl |
Study information
| Primary study design | Interventional |
|---|---|
| Study design | Randomised controlled trial |
| Secondary study design | Randomised controlled trial |
| Scientific title | Dutch Obesity Intervention in Teenagers: a school-based intervention program to improve dietary and physical activity behaviour in adolescents, in order to prevent excessive weight gain |
| Study acronym | DOiT |
| Study objectives | It is hypothesised that the intervention will result in: 1. A difference between the intervention and the control group of at least 0.5 kg of body weight gain in favour of the intervention group after a one-year intervention period 2. Furthermore, a difference between the intervention and control group is expected of 7% (0.5 points on a 7-point scale) in cognitions (i.e. awareness, attitude, subject norm and self-efficacy) and 7% (0.5 points on a 7-point scale) in the behavioural intention of reaching a more favourable energy-balance |
| Ethics approval(s) | The Medical Ethical Committee of the VU University Medical Center |
| Health condition(s) or problem(s) studied | Overweight and obesity |
| Intervention | An educational program was developed and implemented in the biology and physical education lessons. These lessons aimed at increasing awareness and behavioural changes concerning energy intake, consumption of sugar-sweetened drinks and energy-dense snacks in particular; and energy output i.e. physical activity and sedentary behaviours. In addition, schools were advised on modifying the canteens, and requested to provide additional physical education classes in order to facilitate behavioural change. Furthermore, participants are requested to choose at least one of four intervention options aimed at the individual, two regarding physical activity and two regarding food intake. Control intervention: The regular school curriculum. |
| Intervention type | Behavioural |
| Primary outcome measure(s) |
Weight, height, and body composition (based on waist, arm, and thigh circumferences, and four skinfolds: triceps, biceps, subscapular, supra iliac), dietary behaviour (by questionnaires focusing on snacking and soft drinks), physical activity (by questionnaire in the whole group, and in a subgroup by accelerometers) and physical inactivity (by questionnaire). |
| Key secondary outcome measure(s) |
1. Cognitions and intention (awareness, attitude, subjective norms, descriptive norms, self-efficacy - by questionnaire) related to recommended physical activity levels and dietary behaviours |
| Completion date | 31/08/2006 |
Eligibility
| Participant type(s) | Patient |
|---|---|
| Age group | Child |
| Lower age limit | 12 Years |
| Upper age limit | 14 Years |
| Sex | All |
| Target sample size at registration | 1070 |
| Key inclusion criteria | Dutch adolescent boys and girls aged 12 - 14 years attending pre-vocational education |
| Key exclusion criteria | No exclusion criteria |
| Date of first enrolment | 01/08/2002 |
| Date of final enrolment | 31/08/2006 |
Locations
Countries of recruitment
- Netherlands
Study participating centre
1081 BT
Netherlands
Results and Publications
| Individual participant data (IPD) Intention to share | No |
|---|---|
| IPD sharing plan summary | Not provided at time of registration |
| IPD sharing plan |
Study outputs
| Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
|---|---|---|---|---|---|
| Results article | results | 01/12/2014 | Yes | No | |
| Protocol article | protocol | 16/12/2006 | Yes | No | |
| Study website | Study website | 11/11/2025 | 11/11/2025 | No | Yes |
