| Objectives: To analyze the influencing factors of the dietary pattern of Mongolian primary and secondary school students in Xilin Gol League and its relationship with body composition,to provide a scientific basis for the study of healthy growth of Mongolian children and adolescents,and provide a reference for guiding their nutrition improvement and the school’s formulation of health strategies and health care measures.Methods: Based on the cohort research project of children and adolescents in the National Key Research and Development Program Precision Medicine Special "Natural Population Cohort Study in the Northeast Region",Mongolian students from 5 primary schools and 5middle schools in the two areas of the Xilin Gol League in the Inner Mongolia Autonomous Region were surveyed,using food frequency The survey was carried out with questionnaires on health-related factors,and the specific indicators included the basic situation of each subject’s personal family and the frequency of various food intakes.Use a body composition analyzer to detect body composition,and measure body composition indicators such as body fat,total water,muscle mass,and bone mass of each subject.The differences in body composition indicators among students of different genders were analyzed,and dietary patterns were constructed through factor analysis.The Chi-square test was used to analyze whether there were differences in the influence of family factors under different quantile dietary patterns,and the multivariate logistic regression model was used to analyze the influence of family factors on dietary patterns.Multiple linear regression models were used to analyze the association between dietary patterns and body composition.In order to evaluate the confounding effects of gender,age,BMI level,and different dietary patterns on the results,three models were constructed.Model 1 was unadjusted,model 2 included gender,age,and BMI level,and model 3 was based on model 2.Additional dietary pattern scores were added to the above(without adjusting for BMI levels when the dependent variable was BMI).The inspection level α=0.05.Result: 1.A total of 2876 students were included in this study,including 1439 boys and 1437 girls.There were significant differences in various indicators of body composition among students of different genders.The fat content and body fat rate of female students were significantly higher than those of male students(P<0.05),while the body weight and muscle mass of male students were significantly higher than those of female students(P<0.05).2.2.Three dietary patterns were identified for the study population,named respectively:non-staple food and beans dietary pattern(desserts,beverages,nuts,beans and soy products),staple food poultry dietary pattern(staple food,poultry,fish and seafood)and Mongolian dietary patterns(milk and dairy products,livestock meat,tea).After adjusting for age,gender,BMI level,and the other two dietary pattern scores,the non-staple food soy pattern was associated with height(β=-1.310,P=0.024),fat-free body mass(β=-0.533,P=0.029),bone mass(β=-0.103,P=0.015),body water(β=-1.069,P=0.006)and basal metabolic rate(β=-46.746,P=0.044)were negatively correlated with body mass index(β=0.370,P=0.010)was positively correlated;the dietary pattern of staple food poultry was associated with height(β=2.025,P=0.021),fat-free body weight(β=0.531,P=0.030),bone mass(β=0.479,P=0.036),body Moisture(β=0.677,P<0.001)and basal metabolic rate(β=56.089,P=0.005)were positively correlated,and fat percentage(β=-0.596,P=0.039)was negatively correlated;Mongolian dietary pattern and height(β=1.909,P=0.001),body weight(β=1.108,P=0.023),fat-free body weight(β=0.805,P=0.017),body water(β=0.589,P=0.017)were positively correlated with fat mass(β=-0.545,P=0.032)and BMI(β=-0.244,P=0.020)were negatively correlated.3.The school stage is elementary school(OR=1.352,95%CI: 1.016～1.800),the parents are divorced(OR=1.699,95%CI: 1.097～2.633),and the family income is 50,000 to 5100,000(OR=1.517,95% CI: 1.100～2.092)tend to be a non-staple food bean dietary pattern.The father never drank alcohol(OR=3.973,95%CI: 1.084～14.570)and occasionally drank alcohol(OR=4.917,95%CI: 1.340～18.044),and the family environment was urban(OR=1.058,95%CI: 1.009～2.380)tends to eat poultry as the staple food and outdoor exercise time is positively correlated with it(OR=1.096,95%CI: 1.015～1.184),the schooling period is primary school(OR=0.483,95%CI: 0.362～0.645),family income Those below 50,000(OR=0.574,95%CI: 0.393～0.840)were less inclined to this dietary pattern.The gender is male(OR=1.414,95%CI: 1.062～1.882),the family income is 50,000～100,000(OR=1.503,95%CI: 1.084～2.083),and the surrounding environment of the home is a rural pastoral area(OR=1.579,95% CI: 1.032～2.417)tended to Mongolian dietary pattern.Conclusions: 1.This survey found that there are significant differences in the body composition of Mongolian primary and secondary school students of different genders(P<0.05),the fat mass and fat rate of girls are higher than boys(P<0.05),and the growth and development curves of other body compositions are between 10-Crossover occurred in early puberty at age 13.2.This study extracted three dietary patterns based on primary and middle school students in Xilin Gol League: non-staple food beans dietary pattern,staple food poultry dietary pattern and Mongolian dietary pattern.After multi-factor adjustment,the dietary pattern of non-staple food beans was negatively correlated with the main indicators of body composition,and the dietary pattern of staple food poultry and the dietary pattern of Mongolian people were positively correlated with the main indicators of body composition.3.The results of this study show that the dietary patterns of primary and middle school students are affected by family factors,gender and school stage,and the divorce of parents has a greater impact on the unhealthy dietary patterns of primary and middle school students.4.This study explores the relationship between dietary patterns and body composition of children and adolescents in Mongolian-inhabited areas and the related fields of influencing factors of dietary patterns,which provides a certain research basis for future research. |
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