245560 Design and evaluation of an intervention to prevent overweight and obesity in Mexican urban public high schools

Monday, October 31, 2011: 9:30 AM

Guadalupe Rodriguez-Oliveros, PhD , Center for Health Systems Research (CHSR), National Institute of Public Health, Mexico (INSP), Cuernavaca, Morelos, Mexico
Berenice Gaona-Pineda, MSc , Nutrition and Health Reserach Center, National Institute of Public Health, Mexico, Cuernavaca, Morelos, Mexico
Juan Angel Rivera-Dommarco, PhD , Nutrition and Health Reserach Center, National Institute of Public Health, Mexico, Cuernavaca, Morelos, Mexico
Miguel Angel González-Block, PhD , Center for Health Systems Research, National Institute of Public Health, Mexico, Cuernavaca, Mexico
Edward A. Frongillo, PhD , Health Promotion, Education, and Behavior, University of South Carolina, Columbia, SC
Salvador Villalpando-Hernández, PhD , Nutrition and Health Reserach Center, National Institute of Public Health, Mexico, Cuernavaca, Morelos, Mexico
To prevent overweight and obesity among teenagers, an intervention targeted to 40 Mexico City public high schools was conducted by mandate of the Mexican Ministry of Education. The intervention was designed by conducting formative research to identify students' prevalence of key health indicators, and stakeholders perceived barriers/facilitators about key intervention strategies that were proposed by international and national experts. Intervention strategies were implemented on school physical activity (PA) areas and cafeterias (promotion and availability of fruits/vegetables, fat reduced dairy products, and water/low sugar beverages). Gender-oriented strategies were developed to promote PA in women. These strategies were supported by a communication campaign and educational activities. Process and impact evaluation (RCT design) was conducted including anthropometric, diet, psychosocial, market, and PA surveys, as well as focus groups and in-depth interviews with key stakeholders. Implementation barriers relate with students' health concerns about light-foods, perceived low quality/price ratio of fruit/vegetables, reduced availability of free water, curricula design, lack of availability and poor conditions of PA areas, as well as gender-related barriers favoring performance of “male” preferred sports. Positive impact was obtained in students' participation on PA school activities, and fruit (9.3 g/day, p=0.052) and vegetable (130.3 g/day, p=0.002) intake. As expected, no positive impact on nutrition status was demonstrated after one semester of intervention. Extended implementation time is needed for full adoption of proposed strategies. This study will contribute to the development of culturally-accepted interventions and public policy initiatives targeted to adolescents to overcome obesity epidemic and prevent chronic diseases in Hispanic population.

Learning Areas:
Assessment of individual and community needs for health education
Implementation of health education strategies, interventions and programs
Planning of health education strategies, interventions, and programs
Public health or related research

Learning Objectives:
1)Identify organizational, environmental, and individual barriers and facilitators for healthy eating and physical activity promotion among Hispanic high school students. 2)Describe key strategies to prevent overweight and obesity among Mexican youth. 3)Discuss process and impact outcomes of an overweight and obesity prevention intervention targeted to urban Hispanic adolescent populations.

Keywords: Obesity, School-Based Programs

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: As a co-investigator and leader of the formative research and process evaluation component for this study, I am uniquely qualified to present the methodology and findings. Additionally, I have more than 12 years experience in designing and evaluating nutrition interventions, communication campaigns, and formative research in domestic and international studies.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.