Associations between eating frequency, adiposity, diet, and activity in 9-10 year old healthy-weight and centrally obese children.
Associations between eating frequency, adiposity, diet, and activity in 9-10 year old healthy-weight and centrally obese children.
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DOI：
10.1038/oby.2012.72
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发表时间：
2012-07
期刊：
影响因子：
6.9
通讯作者：
Welch, Ailsa A.
中科院分区：
文献类型：
--
作者：
Jennings, Amy;Cassidy, Aedin;van Sluijs, Esther M. F.;Griffin, Simon J.;Welch, Ailsa A.
儿童肥胖率的上升是世界范围内的一个关键公共卫生问题。增加进食频率(EF)是饮食中与肥胖相关的一个方面，尽管其机制尚不清楚。目前这项研究的目的是确定EF增加是否与儿童肥胖症的改善有关，以及这是否由于饮食和活动行为的差异。对1700名9-10岁儿童的横断面数据进行了分析，以检验饮食日记中估计的EF、肥胖度和加速计测量的活动量之间的关系。分析根据肥胖状况进行分层，使用腰围/身高比率来定义肥胖，因为它已被证明是不利健康结果的良好预测因子。平均EF为4.3次/天，在调整了漏报、能量摄入和活动后，健康体重的−2.4%(p=0.001)、体重指数的−1.0%(p=0.020)、体重指数z得分的−33%(p=0.014)和腰围的−0.6%(p=0.031)在正常体重但不是中心性肥胖的儿童中发现了显著的相对平均差异。EF的极端四分位数在早餐总脂肪摄入量(−18%，p<；0.001)、零食中的水果和蔬菜(201%健康体重和209%中心性肥胖儿童，p<；0.01)和健康体重儿童的剧烈运动(4%，p=0.003)方面存在差异。在体重正常但不是中心性肥胖的儿童中，EF增加与肥胖、饮食质量和活动行为有良好的相关性。未来的肥胖干预应该考虑饮食质量和活动在儿童EF和肥胖之间的关系中的中介作用。
The rising prevalence of childhood obesity is a key public health issue worldwide. Increased eating frequency (EF) is one aspect of diet that has been beneficially associated with obesity, although the mechanisms are unclear. The aims of the current study were to determine whether increased EF was associated with improved adiposity in children, and if this was due to differences in dietary and activity behaviours. Cross-sectional data from 1700 9-10-year-olds were analysed to examine associations between EF, estimated from diet diaries, measures of adiposity, and activity measured by accelerometer. Analyses were stratified by obesity status using waist-to-height ratio to define obesity as it has shown to be a good predictor of adverse health outcomes. Mean EF was 4.3 occasions/day and after adjustment for under-reporting, energy intake, and activity significant relative mean differences of −2.4% for body weight (p=0.001), −1.0% for BMI (p=0.020), −33% for BMI z-score (p=0.014), and −0.6% for waist circumference (p=0.031) per increase in eating occasion were found in healthy weight but not centrally obese children. Differences between the extreme quartiles of EF were observed for total fat intake at breakfast (−18%, p<0.001), fruit and vegetables from snacks (201% healthy weight and 209% centrally obese children, p<0.01), and for healthy weight children, vigorous activity (4%, p=0.003). Increased EF was favourably associated with adiposity, diet quality, and activity behaviours in healthy weight but not centrally obese children. Future obesity interventions should consider the mediating role of diet quality and activity in the relationship between EF and adiposity in children.
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