Additional identifiers
EudraCT number
ClinicalTrials.gov number
Protocol/serial number
N/A
Study information
Scientific title
The effects of an interactive web-based intervention to promote healthy behaviour: a randomised single-blind study with a waiting list control condition
Acronym
Study hypothesis
Respondents who receive access to the interactive web-based intervention will show more improvement in healthy behaviour (nutrition and exercise) than respondents in the waiting-list condition after the intervention period of 12 weeks.
Ethics approval
No ethics approval needed in the Netherlands for this trial on online prevention.
Study design
Randomised single blind controlled study
Primary study design
Interventional
Secondary study design
Randomised controlled trial
Trial setting
Other
Trial type
Quality of life
Patient information sheet
Not available in web format, please use the contact details below to request a patient information sheet
Condition
Healthy nutrition and exercise habits
Intervention
Intervention:
Access to interactive web-based application: participants can create a personal account at the intervention website and can use the application as often as they like to for the intervention period of 12 weeks.
Control:
Waiting-list: participants receive a newsletter (once every 3 weeks) with general information (no information on healthy behaviour). After the intervention period of 12 weeks, they receive access to the application.
Intervention type
Other
Phase
Not Applicable
Drug names
Primary outcome measure
1. Nutrition behaviour, measured using 14 item questionnaire of the Netherlands Nutrition Centre at baseline and after 12 weeks
2. Exercise behaviour, measured according to the Dutch Norm for Healthy Exercise (Nederlandse Norm Gezond Bewegen), using a 4-item questionnaire at baseline and after 12 weeks
Secondary outcome measures
1. Self-efficacy nutrition and exercise, both measured using a 3-item questionnaire (5 point Likert-scale) at baseline and after 12 weeks
2. Knowledge healthy nutrition habits, measured using a 10-item true/false questionnaire based on the Netherlands classification model at baseline and after 12 weeks
3. Knowledge healthy exercise habits, measured using a 10-item true/false questionnaire based on the Dutch norm for healthy exercise at baseline and after 12 weeks
4. Attitude healthy behaviour, measured using a 5-point Likert-scale questionnaire with 5 items on health consciousness attitude and 6 items on health beliefs attitude at baseline and after 12 weeks
5. Stage of change healthy nutrition and exercise, both measured using one item with five distinct answering categories at baseline and after 12 weeks
Overall trial start date
01/12/2008
Overall trial end date
01/06/2009
Reason abandoned (if study stopped)
Eexercise & healthy eating behaviours
Eligibility
Participant inclusion criteria
1. Dutch-speaking
2. Interested in using online lifestyle intervention
3. Access to PC with internet access
4. Aged 18 years and over, either sex
Participant type
Patient
Age group
Adult
Gender
Both
Target number of participants
300
Participant exclusion criteria
Body mass index (BMI) less than 18 or more than 28 kg/m^2
Recruitment start date
01/12/2008
Recruitment end date
01/06/2009
Locations
Countries of recruitment
Belgium, Netherlands
Trial participating centre
Faculty of Behavioural Sciences
Enschede
7500AE
Netherlands
Sponsor information
Organisation
University of Twente (Netherlands)
Sponsor details
P.O Box 217
Enschede
7500AE
Netherlands
Sponsor type
University/education
Website
Funders
Funder type
Hospital/treatment centre
Funder name
Netherlands Nutrition Centre (Netherlands)
Alternative name(s)
Funding Body Type
Funding Body Subtype
Location
Results and Publications
Publication and dissemination plan
Not provided at time of registration
Intention to publish date
Participant level data
Not provided at time of registration
Basic results (scientific)
Publication list
2011 results in http://www.ncbi.nlm.nih.gov/pubmed/21493191
Publication citations
-
Results
Kelders SM, Van Gemert-Pijnen JE, Werkman A, Nijland N, Seydel ER, Effectiveness of a Web-based intervention aimed at healthy dietary and physical activity behavior: a randomized controlled trial about users and usage., J. Med. Internet Res., 2011, 13, 2, e32, doi: 10.2196/jmir.1624.