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：评估女性青少年为期一年的不当进食行为（Inappropriate Eating Behaviors, IEB）发生情况。
研究方法：共计290名年龄介于11至14岁的青少年参与了三轮研究阶段（T1：前四个月，T2：中间四个月，T3：后四个月）。采用进食态度测试量表（Eating Attitudes Test, EAT-26）对不当进食行为进行评估。在三个研究周期内测量受试者身高与体重，以计算身体质量指数（Body Mass Index, BMI）。采用重复测量方差分析对数据进行统计分析，并以身体形态问卷评分及巴西经济分类标准作为校正变量。
研究结果：T1阶段女性青少年的不当进食行为发生频率高于T2（p=0.001）与T3阶段（p=0.001）。研究同时发现，T3阶段的身体质量指数均值高于T1阶段（p=0.04），其余组间比较均未呈现统计学显著性差异。
研究结论：女性青少年的不当进食行为评分在为期一年的随访周期内呈下降趋势。