Chen Yanrong, Liu Yan, Xue Hongmei, Bao Yuxin, Luo Jiao, Tian Guo, Cheng Guo
Wei Sheng Yan Jiu. 2016 May;45(3):402-8.
To investigate the intakes of dietary calcium/dairy and the current prevalence of overweight and obesity among children and adolescents aged 7-15 in Longquanyi District, Chengdu, and to explore the association of dietary calcium and dairy intake with overweight/obesity.
1738 children and adolescents were recruited in the cross-sectional study using cluster random sampling method. Information on dietary calcium and dairy intakes was collected using 24-hour dietary recall and food frequency questionnaire (FFQ). Height, weight and waist circumference were measured to calculate body mass index (BMI)/waist-to-height ratio (WHtR) and body mass index standard deviation (BMI SDS). Overweight/obesity was defined based on the criteria of Working Group on Obesity in China (WGOC). Participants were grouped into 3 categories indicating lower, moderate and higher intakes of dietary calcium and dairy, respectively. The association of dietary calcium and dairy consumption with (BMI SDS) /WHtR and the prevalence of overweight/obesity was analyzed after being stratified by gender and age.
The prevalence of overweight/obesity in boys and girls were 11.92%/7.04% and 8.04%/6.30%, respectively. The intake of dietary calcium and dairy in girls were much higher than that in boys (P < 0.0001). Among boys aged 7-9 years, those with higher consumption of dairy had the higher BMI SDS (P = 0.01). Among boys aged 10-12 years, those with higher consumption of dietary calcium had the lowest prevalence of overweight (P = 0.03). However, similar results were not observed among girls.
Dietary calcium and dairy intakes seemed to be related to overweight/ obesity in boys, however the associations were inconsistent among different age groups. Associations between consumption of calcium, dairy and overweight/obesity were not found among girls.
调查成都市龙泉驿区7 - 15岁儿童青少年膳食钙/乳制品摄入量以及超重和肥胖的现状，并探讨膳食钙和乳制品摄入量与超重/肥胖之间的关联。
采用整群随机抽样方法招募1738名儿童青少年进行横断面研究。通过24小时膳食回顾法和食物频率问卷（FFQ）收集膳食钙和乳制品摄入量信息。测量身高、体重和腰围以计算体重指数（BMI）/腰高比（WHtR）和体重指数标准差（BMI SDS）。根据中国肥胖问题工作组（WGOC）的标准定义超重/肥胖。参与者分别被分为膳食钙和乳制品摄入量较低、中等和较高的3类。在按性别和年龄分层后，分析膳食钙和乳制品消费与（BMI SDS）/WHtR以及超重/肥胖患病率之间的关联。
男孩和女孩的超重/肥胖患病率分别为11.92%/7.04%和8.04%/6.30%。女孩的膳食钙和乳制品摄入量远高于男孩（P < 0.0001）。在7 - 9岁的男孩中，乳制品摄入量较高的男孩BMI SDS较高（P = 0.01）。在10 - 12岁的男孩中，膳食钙摄入量较高的男孩超重患病率最低（P = 0.03）。然而，在女孩中未观察到类似结果。
膳食钙和乳制品摄入量似乎与男孩的超重/肥胖有关，但在不同年龄组之间的关联并不一致。在女孩中未发现钙、乳制品消费与超重/肥胖之间的关联。
