Summer effects on body mass index (BMI) gain and growth patterns of American Indian children from kindergarten to first grade: a prospective study.
Summer effects on body mass index (BMI) gain and growth patterns of American Indian children from kindergarten to first grade: a prospective study.
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DOI：
10.1186/1471-2458-11-951
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发表时间：
2011-12-23
影响因子：
4.5
通讯作者：
Story M
中科院分区：
文献类型：
--
作者：
Zhang J;Himes JH;Hannan PJ;Arcan C;Smyth M;Rock BH;Story M
超重和肥胖在美国印第安儿童中非常普遍，尤其是那些生活在保留地的印第安儿童。关于暑假对儿童肥胖发展的影响，几乎没有科学证据。本研究的目的是调查美国印第安儿童在幼儿园到一年级之间的暑假对身高、体重和身体质量指数（BMI）增长的影响。在北部平原印第安人保留区，作为学校肥胖预防试验（Bright Start）的一部分，儿童在四轮数据收集中测量了他们的身高和体重（产生三个间隔：幼儿园，暑假和一年级）。从父母调查中收集人口统计变量作为基线。使用广义线性混合模型对BMI、体重和身高的生长速度（z得分单位/年）进行估计和比较。这些孩子的身高和体重都高于同龄孩子的中位数。身高z分数与体重状态类别增加呈正相关。夏季的平均重量流速明显小于学年。夏季的生长速度比学年更快。肥胖儿童在一年级时调整后的体重指数增加较少，而在前两个间隔期间，肥胖儿童的体重指数增加较多。在身高和BMI速度方面没有发现统计学上显著的间隔效应。没有迹象表明夏季对儿童的BMI有显著影响。体重- z和BMI-Z速度显示的主要模式可能与年龄或成熟度有关，而不是季节性或学校相关的模式。光明的开始：肥胖预防在美国印第安儿童临床试验政府ID# NCT00123032
Overweight and obesity are highly prevalent among American Indian children, especially those living on reservations. There is little scientific evidence about the effects of summer vacation on obesity development in children. The purpose of this study was to investigate the effects of summer vacation between kindergarten and first grade on growth in height, weight, and body mass index (BMI) for a sample of American Indian children. Children had their height and weight measured in four rounds of data collection (yielded three intervals: kindergarten, summer vacation, and first grade) as part of a school-based obesity prevention trial (Bright Start) in a Northern Plains Indian Reservation. Demographic variables were collected at baseline from parent surveys. Growth velocities (Z-score units/year) for BMI, weight, and height were estimated and compared for each interval using generalized linear mixed models. The children were taller and heavier than median of same age counterparts. Height Z-scores were positively associated with increasing weight status category. The mean weight velocity during summer was significantly less than during the school year. More rapid growth velocity in height during summer than during school year was observed. Obese children gained less adjusted-BMI in the first grade after gaining more than their counterparts during the previous two intervals. No statistically significant interval effects were found for height and BMI velocities. There was no indication of a significant summer effect on children's BMI. Rather than seasonal or school-related patterns, the predominant pattern indicated by weight-Z and BMI-Z velocities might be related to age or maturation. Bright Start: Obesity Prevention in American Indian Children Clinical Trial Govt ID# NCT00123032
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影响因子：
7.1
作者：
Story, M;Evans, M;Broussard, B
通讯作者：
Broussard, B
影响因子：
7.1
作者：
Perusse, L;Bouchard, C
通讯作者：
Bouchard, C
DOI：
10.1038/oby.2008.359
发表时间：
2008-10
期刊：
Obesity (Silver Spring, Md.)
影响因子：
--
作者：
Stovitz SD;Pereira MA;Vazquez G;Lytle LA;Himes JH
通讯作者：
Himes JH
影响因子：
5.1
作者：
Heitzler, CD;Martin, SL;Huhman, M
通讯作者：
Huhman, M
影响因子：
7.1
作者：
ROLLANDCACHERA, MF;DEHEEGER, M;PATOIS, E
通讯作者：
PATOIS, E