Dietary Habits, Overweight and Obesity, Physical Activity
Conditions
Brief summary
This study aims to make a proper scientific assessment on the dietary intake and physical activity levels of a representative sample of the urban population of 8 Latin American countries (Argentina, Brazil, Chile, Colombia, Costa Rica, Ecuador, Perú and Venezuela). The study was based on complex, multistage sample design, stratified by conglomerates, being all regions of each country represented, and random selection of main cities within each region according to probability proportional to size method. Sample will be stratified by gender, age (15 to 65 years old), and socioeconomic level. Socioeconomic levels will be balanced and divided in three strata (high, medium and low) based on national indexes used in each country. All the study sites are university-based and will adhere to a common study protocol for training, implementation of fieldwork, data collection and management, and quality control procedures to be performed simultaneously. All participants will be required to provide a written informed consent. A pilot study at small scale will be performed in each country in order to test procedures and tools involved in ELANS. Anthropometric variables, including body weight, height, waist, hip and neck circumferences will be measured according to a standardized protocol. Nutritional intake evaluation will be performed using two 24-hour dietary recalls, with 'multiple pass' procedure and a food frequency questionnaire. Nutritional data will be entered in Nutrition Data System for Research (NDS-R, Minnesota University) after a harmonization process between local foods and NDSR database. Physical activity and energy expenditure will be assessed by IPAQ-long version questionnaire and 7-day accelerometry.
Interventions
None listed
Sponsors
International Life Sciences Institute, Argentina
Pontificia Universidad Catolica de Chile
Pontificia Universidad Javeriana
Universidad de Costa Rica
Universidad San Francisco de Quito
Instituto de Investigacion Nutricional, Peru
Universidad Central de Venezuela
Mauro Fisberg
Study design
Observational model
CASE_ONLY
Time perspective
CROSS_SECTIONAL
Eligibility
Sex/Gender
ALL
Age
15 Years to 65 Years
Healthy volunteers
Yes
Inclusion criteria
* males and females * 15 to 65 years old
Exclusion criteria
* Adolescents without assent and parent´s or legal guardian´s permission will be excluded * Any adolescent or adult with mental and/or physical disability will be excluded. * Any adolescent or adult with a chronic or acute illness that may affect normal eating behavior or energy expenditure will be excluded. * Pregnant and nursing women of a child younger than 6 months will be excluded. * Any adolescent or adult who is not able to read will be excluded. * Any adolescent or adult who is not present at or refuses to accept the second visit will be excluded. * Any adolescent or adult living in any residential settings different from a household (hospitals, regiments, homes, such as old-age homes, etc.) and mobile homes or trailers are excluded.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| energy expenditure | 1 week | accelerometer measurement during 1 week |
| overweight/obesity | baseline | overweight/obesity will be assessed via anthropometric evaluation |
| energy intake | 2 food records will be applied with 7 days apart | Nutritional intake will be performed using two 24-hour dietary recalls, with 'multiple pass' procedure |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| snack intake | 2 food records will be applied with 7 days apart | snack intake will be evaluated using two 24-hour dietary recalls, with 'multiple pass' procedure |
| beverage intake | after 7 days | Beverage intake will be evaluated using a food frequency questionnaire |
Countries
Argentina, Brazil, Chile, Colombia, Costa Rica, Ecuador, Peru, Venezuela
Outcome results
None listed