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目的通过研究膳食钙和奶类的摄入量与肥胖的关系,旨在为进一步研究肥胖的发病机制和干预手段提供依据。方法以2011年4-9月期间进入一项肥胖干预试验筛选阶段的119名大专院校女生为病例组,年龄18～22周岁;同时选择同性别、同年龄、同身高,体重正常的同校健康学生作为对照组,以1∶1配对。对病例组和对照组进行食物频率调查及人体测量。采用条件Logistic回归法,分析不同钙和奶类摄入量对肥胖的关系;通过Pearson相关系数法,分析钙和奶的摄入量同BMI和体脂百分比的相关性。结果膳食钙的摄入是肥胖的保护性因素,中高及高摄入量水平相对于最低摄入量水平具有统计学意义(OR值分别为0.19和0.05,P值均<0.01);奶类的中高和高摄入量水平相对于最低摄入水平的保护性作用有统计学意义(OR值分别为0.36和0.16,P值均<0.01)。BMI与钙的摄入(r=-0.38)和奶的摄入(r=-0.25),体脂百分比与钙的摄入(r=-0.37)和奶的摄入(r=-0.26)均呈负相关(P值均<0.01)。结论膳食钙及奶类的摄入是肥胖的保护性因素,且与肥胖呈负相关。
Objective To study the relationship between dietary calcium and milk intake and obesity and to provide basis for further studying the pathogenesis and intervention of obesity. Methods A total of 119 college girls who entered the screening stage of obesity intervention from April to September of 2011 were selected as the case group and aged from 18 to 22 years old. At the same time, the same gender, same age, same height, Healthy students served as control group, paired with 1: 1. Food frequency survey and anthropometric measurements were performed on case and control groups. Logistic regression was used to analyze the relationship between dietary calcium and milk intake and obesity. The Pearson correlation coefficient method was used to analyze the correlation between intake of calcium and milk and the percentage of body fat and BMI. Results The intake of dietary calcium was a protective factor of obesity. The levels of high, medium and high intake were statistically significant compared with the lowest intake (OR = 0.19 and 0.05, P <0.01 respectively) The protective effects of high and high intakes at the lowest intake levels were statistically significant (OR = 0.36 and 0.16, P <0.01 respectively). BMI and calcium intake (r = -0.38) and milk intake (r = -0.25), body fat percentage and calcium intake (r = -0.37) and milk intake (r = -0.26) Was negatively correlated (P <0.01). Conclusion Dietary intake of calcium and milk is a protective factor of obesity, and is negatively correlated with obesity.