Archivos Latinoamericanos de Nutrición (Sep 2009)
Etapas del cambio relacionadas con el consumo de frutas y verduras, actividad física y control del peso en estudiantes universitarios chilenos Stages of change related to fruit and vegetables consumption, physical activity, and weight control in Chilean university students
Abstract
Como línea base para diseñar intervenciones efectivas en promoción de salud, se determinó el estado nutricional y las etapas del cambio respecto al consumo de frutas y verduras, la actividad física y el control del peso en 955 estudiantes de ambos sexos en la Universidad del Bio-Bio, Chile. La muestra fue seleccionada aleatoriamente por sede, facultad y carrera, con un nivel de confianza del 95% y un error máximo del 3%. Se realizó un análisis descriptivo y se evaluó la asociación entre el estado nutricional y las variables estudiadas aplicando la prueba de Chi2. Para determinar el estado nutricional se usó el índice de masa corporal y los criterios de la OMS para adultos. Para evaluar las etapas del cambio se aplicó un instrumento previamente validado por el INTA. La prevalencia de sobrepeso y obesidad alcanzó al 48,2% en los hombres y al 25,5% en las mujeres, (pIn order to design effective health promotion interventions, nutritional status and the stages of change related to the consumption of fruit and vegetables, physical activity, and weight control were determined in 955 students of both genders at the University of Bio-Bio, Chile. The sample was randomly selected by campus, faculty, and career, with a level of confidence of 95% and a maximum error of 3%. Beside the descriptive analysis, to evaluate the association among nutritional status, fruit and vegetables consumption, physical activity and weight control, Chi2 test was applied. Nutritional status was determined by Body Mass Index and WHO reference standards for adults. A questionnaire previously validated by INTA was applied to evaluate the stages of change. The prevalence of overweight and obesity reached 48.2% in men and 25.5% in women (p<0.0001). Only 3.1% of men and 7.3% of women consumed the 5 recommended daily servings of fruit and vegetables. The majority consumed 1 or 2 daily servings (69.5% men and 54.3% women), and the rest 3 to 4 servings (18.2% and 34.7%, respectively) (p<0.0001). 58% of men and 43% of women carried out physical activity regularly (p<0.0001). 73.1% of men and 79.3% of women were trying to reduce or not to increase their weight (p<0.0002). It is concluded that students require specific interventions and appropriate conditions to increase their fruit and vegetables consumption, and physical activity.
