Kanbur Nuray O, Derman Orhan, Kinik Erol
Adolescent Unit, Department of Pediatrics, University of Hacettepe Medical School, Pediatrics, Ankara, Turkey.
Int J Adolesc Med Health. 2002 Jan-Mar;14(1):61-5. doi: 10.1515/IJAMH.2002.14.1.61.
Puberty is a high-risk period for the development of obesity. The aim of this study was to determine the prevalence of obesity in adolescents admitted to an outpatient adolescent clinic and investigate the relationships between the increase of body mass index and sexual maturation stages in obese adolescents.
We recruited 6,462 adolescents, aged 9-16 years, admitted to the outpatient clinic of our Adolescent Unit, between May 1999 and September 2000. BMI was calculated as weight per height with weight in kilograms and height in meters. Adolescents with a BMI > or = 95th percentile for age and sex were defined as obese, with BMI's > or = 90th percentile but < 95th percentile were defined as overweight and considered at risk for obesity. Obese adolescents, with endocrine problems identified to cause obesity, were excluded from this study. Pearson correlation coefficients were used to assess the relationships between BMI and age. The differences between the sexual maturation stages were evaluated with Mann-whitney U Test.
Out of 6,462 cases screened, 151 obese adolescents were found. Prevalence of obesity for the total sample surveyed was estimated at 2.3%. BMI values were significantly correlated with age in both sexes. In girls, only the increase of BMI values from stage I to stage II was found to be statistically significant. In boys, BMI values did not differ significantly between the sexual maturation stages but the number of obese cases were high in stages I and II.
The pubertal growth spurt (timing determined by sexual maturation stage) effects the amount of fat accumulation and the distribution of fat in different ways in boys and girls. So, not only the age and sex but also the sexual maturation stage has to be taken into account while evaluating the BMI values for investigating the risk of obesity in puberty.
青春期是肥胖发展的高危时期。本研究的目的是确定在青少年门诊就诊的青少年中肥胖的患病率，并调查肥胖青少年体重指数增加与性成熟阶段之间的关系。
我们招募了1999年5月至2000年9月期间在青少年科门诊就诊的6462名9至16岁的青少年。体重指数（BMI）通过体重（千克）除以身高（米）计算得出。BMI大于或等于同年龄、同性别的第95百分位数的青少年被定义为肥胖，BMI大于或等于第90百分位数但小于第95百分位数的青少年被定义为超重，并被视为有肥胖风险。已确定有导致肥胖的内分泌问题的肥胖青少年被排除在本研究之外。使用Pearson相关系数评估BMI与年龄之间的关系。性成熟阶段之间的差异采用Mann-whitney U检验进行评估。
在筛查的6462例病例中，发现151名肥胖青少年。调查的总样本中肥胖的患病率估计为2.3%。BMI值在两性中均与年龄显著相关。在女孩中，仅发现BMI值从第一阶段到第二阶段的增加具有统计学意义。在男孩中，性成熟阶段之间的BMI值没有显著差异，但在第一阶段和第二阶段肥胖病例数较多。
青春期生长突增（时间由性成熟阶段决定）以不同方式影响男孩和女孩的脂肪堆积量和脂肪分布。因此，在评估BMI值以调查青春期肥胖风险时，不仅要考虑年龄和性别，还要考虑性成熟阶段。
