西安高校学生膳食模式与视频显示终端综合征的关系

Dietary patterns and its relationship with video display terminal syndrome among undergraduate students in Xi'an

目的探索西安市高校学生不同膳食模式与视频显示终端(video display terminal,VDT)综合征的关系,为VDT综合征的预防制定针对性的改善策略。方法采用多阶段分层整群抽样方法,对西安市5所高校的1 469名研究对象进行生活方式、食物摄入频率、视频显示终端相关症状的问卷调查。利用因子分析方法建立膳食模式,并运用多因素Logistic回归模型分析膳食模式与VDT综合征罹患的相关关系。结果因子分析得到4种膳食模式,分别为快餐性食物模式、动物性食物模式、素食性食物模式和均衡性食物模式,因子累积贡献率为51.24%。在调整年龄、性别、体质量指数(BMI)、吸烟、饮酒、体力活动、睡眠时间、每日计算机使用时间、计算机累积使用年限等可能的混杂因素后,多因素Logistic回归模型分析显示,快餐性食物模式是VDT综合征的危险因素,因子得分处于高分位数组水平人群VDT综合征的发生风险为低分位数组水平人群的1.47倍(95%CI=1.08~1.99,P=0.013)。均衡性食物模式与VDT综合征罹患之间呈负相关,高分位数组水平人群VDT综合征的发生风险为低分位数组水平的0.71(95%CI=0.52~0.95,P=0.021)。结论西安高校学生的快餐性食物模式与VDT综合征罹患风险的增加相关,而均衡性食物模式则可降低VDT综合征的罹患风险。

Objective To investigate the relationship between different dietary patterns among undergraduate students in Xi＇ an and video display terminal（ VDT） syndrome and to provide effective nutritional precaution and scientific guidelines.Methods Totally 1 469 subjects were surveyed in the questionnaire investigation consisting of lifestyle,dietary assessment and symptoms of VDT by multistage stratified cluster sampling.Dietary patterns were derived by factor analysis based on validated food frequency questionnaires.We used multivariate unconditional Logistic regression models to evaluate the association between dietary patterns and VDT symptom risk using the lowest tertile of the dietary patterns scores as the reference category.Results Four major dietary patterns emerged from factor analysis,which were identified fast food pattern,meat pattern,plant pattern and balanced pattern,respectively.The accumulative contribution rate of the total factors accounts for 51.24%.In multivariable Logistic regression models with adjustment for age,sex,BMI,smoking,drinking,physical activity,hours of sleep and computer using,fast food pattern was found to be strong predictors of increasing the occurrence of VDT syndrome.The risk of VDT syndrome in the students at highest levels of factor score were 1.47（ 95%CI = 1.08-1.99,P = 0.013） times than those whose factor score was in lowest tertile.However,the subjects who were closer to having balance dietary pattern,were under less risk of suffering from VDT syndrome.Compared to the lowest levels of factor score,the highest tertile had lower risk of VDT syndrome（ OR = 0.71,95%CI = 0.52-0.95）for the balanced pattern.Conclusion The intake of high-fat and high-sugar fast food is associated with an increased risk of VDT syndrome.In contrast,a nutritionally balanced diet can moderately reduce the risk of it.