Zhang Tianyu, Wang Kunyan, Gu Tingyu, Zhang Yali, Zhang Xiangkui
School of Psychology, Northeast Normal University, Changchun, 130024, People's Republic of China.
College of Education, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China.
Psychol Res Behav Manag. 2023 Sep 27;16:4003-4013. doi: 10.2147/PRBM.S423196. eCollection 2023.
BACKGROUND/OBJECTIVE: Body dissatisfaction and restricted diet frequently co-occur among adolescents. However, the exact temporal relationship between the two is unclear. Furthermore, most relevant studies concentrate on Western cultural backgrounds, with only a few investigations conducted in many non-Western developing countries, including China. Therefore, this study aimed to investigate the mutual relationship between body dissatisfaction and restricted diet among Chinese adolescents.
PATIENTS/METHODS: We recruited a sample of 672 middle school students from China (358 females, mean age = 14.33±0.94) and collected self-reported measures of body dissatisfaction and restricted diet at three-time points (with a five-month interval between each). We used cross-lagged models to examine the bidirectional relationship between body dissatisfaction and restricted diet.
(1) Both cross-sectional and cross-lagged correlation analysis showed positive correlation between body dissatisfaction and restricted diet (=0.29-0.36; =0.25-0.35, <0.001); (2) The cross-lagged effect of body dissatisfaction on restricted diet was significant (=0.09, 0.13, <0.01), and vice versa (=0.20, 0.18, <0.001); (3) The differences in the associations between body dissatisfaction and restricted diet across gender were found.
CONCLUSION/IMPLICATIONS: There is a bidirectional relationship between adolescents' body dissatisfaction and restricted diet. Our findings enrich the existing literature on body image and dietary health, thereby contributing to the reduction of negative body image and disordered eating among adolescents.
背景/目的：身体不满意和节食在青少年中经常同时出现。然而，两者之间的确切时间关系尚不清楚。此外，大多数相关研究集中在西方文化背景下，在包括中国在内的许多非西方发展中国家进行的调查较少。因此，本研究旨在探讨中国青少年身体不满意与节食之间的相互关系。
患者/方法：我们招募了672名来自中国的中学生作为样本（358名女生，平均年龄=14.33±0.94），并在三个时间点（每次间隔五个月）收集了关于身体不满意和节食的自我报告测量数据。我们使用交叉滞后模型来检验身体不满意和节食之间的双向关系。
（1）横断面和交叉滞后相关分析均显示身体不满意与节食之间存在正相关（=0.29 - 0.36；=0.25 - 0.35，<0.001）；（2）身体不满意对节食的交叉滞后效应显著（=0.09，0.13，<0.01），反之亦然（=0.20，0.18，<0.001）；（3）发现身体不满意与节食之间的关联在性别上存在差异。
结论/启示：青少年的身体不满意和节食之间存在双向关系。我们的研究结果丰富了关于身体形象和饮食健康的现有文献，从而有助于减少青少年的负面身体形象和饮食失调。
