Inappropriate eating behavior: a longitudinal study with female adolescents

Objective: To evaluate the inappropriate eating behaviors (IEB) of female adolescents over a one-year period.Methods:290 adolescents aged between 11 and 14 years old participated in the three research stages (T1: first four months, T2: second four months and T3: third four months). The Eating Attitudes Test (EAT-26) was applied to assess the IEB. Weight and height were measured to calculate body mass index (BMI) in the three study periods. Analysis of variance for repeated measures was used to analyze the data, adjusted for the scores of the Body Shape Questionnaire and the Brazil Economic Classification Criteria.Results:Girls at T1 showed a higher frequency of IEB compared to T2 (p=0.001) and T3 (p=0.001). The findings also indicated higher values for BMI in T3 in relation to T1 (p=0.04). The other comparisons did not show statistically significant differences.Conclusions:IEB scores of female adolescents declined over one year.研究目的：评估女性青少年在为期一年周期内的不当饮食行为（Inappropriate Eating Behaviors，IEB）。 研究方法：共招募290名年龄介于11至14岁的青少年参与三个研究阶段，分别为T1（前四个月）、T2（中间四个月）与T3（后四个月）。采用饮食态度测试量表（Eating Attitudes Test，EAT-26）对不当饮食行为进行评估。在三个研究周期内测量受试者的身高与体重，以计算体质指数（Body Mass Index，BMI）。采用重复测量方差分析对数据进行统计分析，并以体型问卷（Body Shape Questionnaire）得分与巴西经济分类标准作为校正变量。 研究结果：相较于T2组（p=0.001）与T3组（p=0.001），T1阶段的女性青少年不当饮食行为发生频率更高。研究结果同时显示，T3阶段的体质指数值高于T1阶段（p=0.04），其余组间比较未呈现统计学显著性差异。 研究结论：女性青少年的不当饮食行为得分在一年周期内呈下降趋势。