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The Impact of an Intervention Taught by Trained Teachers on Childhood BMI z Score

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01397123
Recruitment Status : Completed
First Posted : July 19, 2011
Last Update Posted : July 19, 2011
Universidade do Porto
Information provided by:
University of Minho

Brief Summary:

The purpose of this study is to assess the effects of a six months nutrition intervention, delivered and taught by classroom teachers with in-service nutrition training, on the prevention of overweight and obesity among children in grades 1 to 4.

In this randomized controlled trial, 464 children from seven elementary schools were allocated to a six months nutrition educational intervention by their own teachers or to standard care. Intervened teachers had 12 sessions of three hours each with the researchers throughout six months, according to the following topics: nutrition and healthy eating (sessions 1 to 4); the importance of drinking water (session 5); strategies to encourage fruits and vegetables consumption and to decrease high energy-density foods intake (sessions 6 to 8); strategies to increase physical activity (sessions 9 and 10); and healthy cooking activities (sessions 11 and 12). After each session, teachers were encouraged to develop activities in class that focused on the learned topics. Sociodemographic, anthropometric, dietary, and physical activity assessments were performed at baseline and the end of intervention.

We expect that fewer intervened children become overweight and the consumption of fruit and vegetables will be higher. In addition, we expect a less consumption of low-nutrition high dense foods.

We also expect to provide further support to decrease overweight epidemic, involving classroom teachers in a training intervention and making them dedicated interventionists.

Condition or disease Intervention/treatment Phase
Evidence of an Intervention on Childhood BMI z Score Other: Training teachers on healthier lifestyles Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 464 participants
Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: Double (Participant, Outcomes Assessor)
Primary Purpose: Prevention
Study Start Date : September 2007
Actual Primary Completion Date : June 2008
Actual Study Completion Date : June 2009

Arm Intervention/treatment
Experimental: Lifestyle counseling Other: Training teachers on healthier lifestyles
During 2007/2008 seven out of eighty public elementary public schools from Guimarães (Portugal) were invited to participate in this study. The number of schools involved was according to constraints of personnel for the assessment and intervention. Schools were the unit of randomization and three were assigned into intervention, and four into control group. Data was collected prior to intervention and immediately after, during the year 2009 (post-intervention). Prior to participation on data collection, parents provided informed consent, and children provided oral assent.

Primary Outcome Measures :
  1. BMI z score [ Time Frame: the first 3 months after the intervention ]

Secondary Outcome Measures :
  1. dietary intake [ Time Frame: within the first 3 months after the intervention ]

Information from the National Library of Medicine

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Ages Eligible for Study:   5 Years to 12 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Children from the schools involved in the study with informed consent provided by parents.

Exclusion Criteria:

  • Age more than 12

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01397123

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Santos Simões group of schools
Guimarães, Braga, Portugal, 4810
Sponsors and Collaborators
University of Minho
Universidade do Porto
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Study Director: Pedro Moreira, PhD Universidade do Porto
Study Director: Beatriz Pereira, PhD University of Minho
Principal Investigator: Rafaela V Rosario University of Minho
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Rafaela Rosário, University of Minho Identifier: NCT01397123    
Other Study ID Numbers: 1845
7613/2008 ( Other Identifier: Portuguese Data Protection Authority )
First Posted: July 19, 2011    Key Record Dates
Last Update Posted: July 19, 2011
Last Verified: July 2011
Keywords provided by University of Minho:
BMI z-score
school-based intervention
trained teachers
Low nutrition energy dense foods