Modifications in the Eating Habits of Secondary Education Adolescents, as a Result of a Nutritional Intervention Based on the Social Cognitive Theory and the Transtheoric Model.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 107
- 试验地点
- 2
- 主要终点
- Change in the Consumption of Sugary Drinks in the Short Term
研究概览
简要总结
The objective of the study was to demonstrate the efficacy of a nutritional intervention based on the Social Cognitive Theory and the Transtheoric Model in the favorable modification of eating habits in adolescents of secondary education.
The hypothesis was that secondary school adolescents receiving a nutritional intervention based on Social Cognitive Theory and the Transtheoric Model presented more favorable modifications in their eating habits than adolescents who only received nutritional information.
A community trial was conducted with pilot testing for the validation of the study instruments. Adolescents from the second grade of the afternoon shift of the Jalisco Technical High School Nº46 participated in the 2015-2016 cycle.
Self-completed questionnaires evaluated socioeconomic variables, physical activity habits, stage of change (Transtheoric Model), constructs of the Social Cognitive Theory and five eating habits: consumption of fruits and vegetables, natural water, dairy products, sugary drinks and processed foods ; As well as anthropometric variables.
The intervention group had twelve workshops on healthy eating habits and two sessions for parents. The control group received three sessions of nutritional information.
All variables were measured again at the end of the intervention to evaluate results in the short term and three months later to know results in the medium term.
详细描述
DESCRIPTION OF THE DESIGN: The present study is a community trial, since there was control group and intervention group, random group assignment, intervention at group level, pre-test and at least one post-test (López, 2011).
The study counted with pre-test or initial evaluation - evaluation 1 (E1) and two post-tests:
Evaluation 2 (E2) in the short term, at the end of the intervention (approx 4 months after evaluation 1).
Evaluation 3 (E3) in the medium term, three months after the intervention. Prior to the community trial, the validation study of the instruments used in the research was carried out. For this, the questionnaires were applied to adolescents twice (Evaluation A-EA and Evaluation B-EB), with a temporal difference of one week.
CALCULATION OF SAMPLE SIZE:
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 12 Years 至 15 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Informed consent signed by parent or guardian.
- •Informed consent signed by the adolescent.
- •Non-inclusion criteria
- •Presence of diagnosed disease, through which dietary habits (diabetes mellitus, kidney disease, etc.) have been modified.
- •Pregnancy or lactation period.
- •Voluntary practice of vegetarian diets (abstention of food of animal origin).
排除标准
- •Two missing assessments.
- •Voluntary decision to leave the study.
- •Attendance at sessions <50%.
- •Initiation of medical or nutritional treatment that influences their eating habits.
结局指标
主要结局
Change in the Consumption of Sugary Drinks in the Short Term
时间窗: Change from baseline at 4 months
Change in the consumption of sugary drinks (portions / day) in the short term (at the end of the intervention)
Change in the Consumption of Natural Water in the Short Term
时间窗: Change from baseline at 4 months
Change in the consumption of natural water (portions / day) in the short term (at the end of the intervention)
Change in the Consumption of Fruits and Vegetables in the Short Term
时间窗: Change from baseline at 4 months
Change in the consumption of fruits and vegetables (portions / day) in the short term (at the end of the intervention)
Change in the Consumption of Dairy in the Short Term
时间窗: Change from baseline at 4 months
Change in the consumption of dairy (portions / day) in the short term (at the end of the intervention)
Change in the Consumption of Processed Foods in the Short Term
时间窗: Change from baseline at 4 months
Change in the consumption of processed foods (portions / day) in the short term (at the end of the intervention)
次要结局
- Change in the Consumption of Dairy in the Medium Term(Change from baseline at 7 months)
- Change in the Consumption of Processed Foods in the Medium Term(Change from baseline at 7 months)
- Change in the Consumption of Natural Water in the Medium Term(Change from baseline at 7 months)
- Change in the Consumption of Fruits and Vegetables in the Medium Term(Change from baseline at 7 months)
- Change in the Consumption of Sugary Drinks in the Medium Term(Change from baseline at 7 months)
研究者
Gabriela Macedo Ojeda
Professor researcher A
Centro Universitario de Ciencias de la Salud, Mexico