Nutr Hasp. 2015;31(5):2088-2094 ISSN 0212-1611 • CODEN NUHOEQ S.V.R. 318

Nutrición Hospitalaria Original /Síndrome metabólico

Association between dietary habits and the presence of overweight/obesity in a sample of 21,385 Chilean adolescents Patricia Lopez-Legarrca1’, Pedro R. Olivares2, Alejandro Almonacid-Fierro2, Rossana Gomez-Campos23, Marco Cossio-Bolaños4-5 and Javier Garcia-Rubio6 'Phaculty o f Health Sciences, Universidad Autonoma de Chile, Santiago, Chile. 2Phaculty o f Education, Uni versidad Autonoma de Chile, Talca, Chile. 3Grupo Interdisciplinar de Estudios e Investigación en Ciencias de la salud y deporte. GEISADE. Universidad Autónoma de Chile, Talca, C hile.4Centro de investigación en desarrollo biológico humano. C1DEB1HU. Universidad Católica del Maulé, Talca, Chile. 5Departament o f Physical Activiy Science, Universidad Católica del Maulé, Talca, Chile. 6Phaculty o f Education, Universidad Autónoma de Chile, Santiago, Chile.

Abstract Aim: The main aim of the present study was to explo­ re the potential associations between dietary habits and the presence of overweight and obesity in Chilean ado­ lescents. Methods: For the present study dietary habits of 21,385 Chilean students were analyzed and weight and height assessed, in order to determine potential associations be­ tween eating patterns and body mass index (BMI) values. Results: The majority of participants have lunch and a snack in the afternoon every day a week (81% and 71.2%, respectively), although only a 59.5% have break­ fast every day and a 22% have dinner every night. To have breakfast is common for thin and normal weight subjects, but only a half of overweight and obese indi­ viduals usually have it. The obese is the group having less dairy products. A 50.2% of all subjects have legumes once or never in a week. Around a 15% have sweets all days and nearly a 50% of all the participants consume fizzy drinks every day of the week. Interestingly, having breakfast was found to be associated with less truancy. Conclusions: Nutritional education strategies should be carried out within students in Chile, since inadequate dietary habits are related to the higher values of BMI. (Nutr Hosp. 2 0 15;31:2088-2094)

1)01:10.3305/nh.2015.31.5.8598 Key Words: Obesity. Dietary habits. Adolescents. Chile.

ASOCIACIÓN ENTRE LOS HÁBITOS DIETÉTICOS Y LA PRESENCIA DE SOBREPESO/OBESIDAD EN UNA MUESTRA DE 21.385 ADOLESCENTES CHILENOS Resumen Objetivos: El principal objetivo del presente trabajo fue evaluar las posibles asociaciones entre los hábitos dietéticos y la presencia de sobrepeso y obesidad en ado­ lescentes Chilenos. Método: Para este trabajo se analizaron los hábitos dietéticos de 21.385 estudiantes Chilenos y se determina­ ron el peso y la talla, con el fin de explorar posibles aso­ ciaciones entre los patrones de alimentación y los valores de índice de masa corporal (IMC). Resultados: La mayoría de los participantes realiza la toma del almuerzo (81%) y de la merienda (71,2%) todos los días de la semana. Sólo el 59,5% de los encuestados toma desayuno cada día y un 22% cena todas las noches. Desayunar es común entre los sujetos delgados y con peso normal, pero únicamente la mitad de los individuos con sobrepeso u obesidad desayuna habitualmente. Los obe­ sos son el grupo que consume menos productos lácteos. Un 50,2% de todos los participantes nunca toma legum­ bres o lo hace una vez por semana. En torno a un 15% toma dulces todos los días y casi la mitad de los encues­ tados ingiere bebidas carbonatadas cada día de la sema­ na. Además, tomar desayuno de forma habitual se asoció inversamente con el absentismo escolar. Conclusión: Se necesitan llevar a cabo estrategias de educación nutricional entre los estudiantes chilenos, ya que los hábitos dietéticos inadecuados se encuentran aso­ ciados con valores más elevados de IMC. (Nutr Hosp. 2 0 15;31:2088-2094)

DOI:10.3305/nh.2015.31.5.8598 Correspondencia: Patricia Lopez-Legarrea Phaculty of Health Sciences. Universidad Autonoma de Chile. Pedro de Valdivia Av, 641. 7500138. Providencia, Santiago. Chile. E-mail: [email protected] Recibido: 24-XII-14. Aceptado: 13-1-15.

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Palabras Clave: Obesidad. Hábitos dietéticos. Adolescen­ tes. Chile.

Abbreviations BMI: Body Mass Index. SIMCE: Chilean National Physical Education Survey. MINEDUC: Chilean Ministry of Education.

Introduction Excessive body weight has become a major public health issue worldwide since the pressence of this dis­ turbance has alarmingly increased in the last decades'. The global prevalence rates of overweight and obesi­ ty among children and adolescents have growcd from 4,2% in 1990, to 6,7% in 2010, and this trend is expec­ ted to continue in the next years, being estimated in a 9,1% for the year 20202. Similarly, a dramatic increase in the prevalence of overweight and obesity has occu­ rred among children and adolescents in Chile, becoming the country with the highest rates in the Latin America region3 4. This phenomenon represents a challenge for public health, not only because of the associated health problems at the infant age, including both physiological and psychological alterations5 0, but also because of the increased morbid-mortality in later life7. It is well known that obesity is a multifactorial disorder in which onset biological and genctical factors are im­ plicated. However, although genetics predispose to the disease, lifestyles have been evidenced to play a crucial role in the manifestation and later development of this pathology8. Among then, a great deal of recent literatu­ re has focused on inadequate eating behaviors, together with sedentary patterns1'. In this sense, some studies have reported the association between energy intake or macronutrient composition and adiposity10-". Also, some die­ tary aspects such as, meal frequency or the variety of the consumed food have been revealed to be associated with body weight, body mass index (BMI) or fat mass, among other indicators of overweight/obesity12. It becomes a primary necessity to prevent excessive body weight among young people as an important con­ tributor to the multilevel response to the obesity epide­ mic. Therefore, it is important to detect which factors are triggering this problem in order to counteract them. Given the presented scenario, the main aim of this study was to explore the potential associations be­ tween dietary habits and the presence of overweight and obesity in Chilean adolescents.

between 1996 and 1999. Data were obtained from the 2012 SIMCE (Chilean National Physical Education Survey), carried out by the Chilean Ministry of Edu­ cation (MINEDUC)13. After applying quality criteria, data from 8,360 individuals were excluded and the fi­ nal simple size considered for the present analyses was n=21,385 (10,526 boys and 10,859 girls; Figure 1). The test was approved by the Chilean Law of Sport i 9,712, article 5. Written informed consent was requi­ red from every school prior to testing by MINEDUC. Each school was instructed to inform parents and stu­ dents with a standardized script about the nature and importance of the tests, the assessment date and time, and how to prepare for the test4. Students with tempo­ rary illness or injury, special needs, physical disabi­ lities or chronic illness were exempt to take the test. The study authors entered a written data use agreement with MINEDUC fulfilling ail ethical safeguards14.

Anthropometric measurements Body weight and height were assessed with the sub­ jects in their underwear in accordance with validated protocols15. Body weight was measured to the nearest 0.1 kg using a Tanita SC-330, (Tanita corp, Japan). Height was estimated with an aluminum stadiometer (Seca 713 model, Postfach, Germany) to the nearest 1 mm. BMI Values were calculated as the body wei­ ght divided by the squared height (kg/nr). The BMI variable was categorized into thinness, normalweight, overweight and obese according to Cole et al. indica­ tions16’ 17.

Methods Sample Food intake habits, anthropometric characteristics and truancy were evaluated in a sample of 29,745 stu­ dents attending 8th grade, from every Chilean regions, with the exception of Easter Island, Juan Fernandez archipelago and Antarctica. The students were born

Asociación entre los hábitos dietéticos y la presencia de sobrepeso/obesidad en una muestra de 21.385 adolescentes chilenos

Fig. I - Flowchart o f the study subjects from the beginning of data collection through to the end o f analyses.

Nutr Hosp. 2015;31(5):2088-2094

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Table I

Anthropometric characteristics of the participants, considering the whole sample and categorized by gender Variable

All (n=21.385)

Boys (n=10.526)

Girls (n=10.859)

P

Age (years old)

14± 1

14± 1

14± 1

-

Weight (kg)

58.87 ±12.08

60.30 ±12.71

57.49±11.26

obesity in a sample of 21,385 chilean adolescents].

Objetivos: El principal objetivo del presente trabajo fue evaluar las posibles asociaciones entre los hábitos dietéticos y la presencia de sobrepeso y...
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