Kotani K, Nishida M, Yamashita S, Funahashi T, Fujioka S, Tokunaga K, Ishikawa K, Tarui S, Matsuzawa Y
Second Department of Internal Medicine, Osaka University Medical School, Japan.
Int J Obes Relat Metab Disord. 1997 Oct;21(10):912-21. doi: 10.1038/sj.ijo.0800492.
To investigate trends in frequency of obese children in Japan over two decades, the frequency of obese children who grow into obese adults and predictive factors for adult obesity.
Annual cross-sectional studies for 22 y (1974-1995) with a follow-up study.
Cross-sectional: Cumulatively 13,186 obese (% of standard body weight (SBW): > or = 120%) schoolchildren including 3158 extremely obese (> or = 140% of SBW) children out of 203,088 schoolchildren (age: 6-14 y) in Izumiohtsu City, Osaka, Japan.
FOLLOW-UP: 151 initially obese children (initial age: 6-14 y and age at follow-up: 20-35 y) who lived in Izumiohtsu City.
3552 Japanese men and 4631 Japanese women (age: 20-35 y).
Cross-sectional: height, weight, trunk circumference, skin-fold thickness, blood pressure and blood biochemicals.
FOLLOW-UP: height, weight, trunk circumference, skin-fold thickness during childhood, and body height and weight at follow-up. Adulthood obesity: > or = 120% of the average body mass indices (BMI) of the controls.
Frequency of obese children increased from 5% to more than 10%, and that of extremely obese children increased from 1% to more than 2% during these 22 y. These increases were most prominent in the schoolboys aged 9-11 y. Prevalence of hyperglycemia and hyperlipidemia in the extremely obese children did not change, and that of hypertension and abnormal liver function gradually decreased during these two decades. After coming of age, 32.2% of the initially obese boys (relative risk: 5.3) and 41.0% of the initially obese girls (relative risk: 6.7) remained obese. BMI, percentage of the SBW and skin-fold thickness at the biceps during childhood were significantly larger in currently-obese girls. Positive correlations were demonstrated between these variables and percentage SBW at follow-up.
Childhood obesity is increasing in Japan, especially in boys aged 9-11 y. Approximately 32% of the obese boys and 41% of the obese girls grow into obese adults, and the degree of obesity is a predictive factor for adult obesity.
调查二十年间日本肥胖儿童的发生率趋势、成长为肥胖成人的肥胖儿童发生率以及成人肥胖的预测因素。
为期22年（1974 - 1995年）的年度横断面研究及一项随访研究。
横断面研究：日本大阪泉大津市203,088名学龄儿童（年龄6 - 14岁）中，累计13,186名肥胖（相对于标准体重（SBW）的百分比：≥120%）学童，其中包括3158名极度肥胖（≥SBW的140%）儿童。
居住在泉大津市的151名最初肥胖儿童（初始年龄6 - 14岁，随访时年龄20 - 35岁）。
3552名日本男性和4631名日本女性（年龄20 - 35岁）。
横断面研究：身高、体重、腰围、皮褶厚度、血压和血液生化指标。
儿童期的身高、体重、腰围、皮褶厚度，以及随访时的身高和体重。成人肥胖定义为：≥对照人群平均体重指数（BMI）的120%。
在这22年中，肥胖儿童的发生率从5%增加到超过10%，极度肥胖儿童的发生率从1%增加到超过2%。这些增加在9 - 11岁的男童中最为显著。在这二十年中，极度肥胖儿童的高血糖和高血脂患病率没有变化，高血压和肝功能异常的患病率逐渐下降。成年后，32.2%的最初肥胖男孩（相对风险：5.3）和41.0%的最初肥胖女孩（相对风险：6.7）仍然肥胖。目前肥胖女孩儿童期的BMI、相对于SBW的百分比和肱二头肌皮褶厚度显著更大。这些变量与随访时相对于SBW的百分比之间存在正相关。
日本儿童肥胖现象正在增加，尤其是在9 - 11岁的男孩中。约32%的肥胖男孩和41%的肥胖女孩成长为肥胖成人，肥胖程度是成人肥胖的一个预测因素。
