Yalçin S S, Kinik E
Department of Social Pediatrics, Hacettepe University Institute of Child Health, Ankara.
Turk J Pediatr. 1999 Jul-Sep;41(3):315-21.
Body mass index (BMI) is used in the clinical assessment of adiposity in children and adolescents. Population-based, race-specific and age-specific curves of BMI for children and adolescents exist, but there are noknown sexual maturation-based BMI curves. The aim of this study was to investigate the effects of pubertal development (assessed according to the Tanner breast stage) on BMI in adolescent girls in a cross-sectional study. The study group comprised 167 healthy girls, between the ages of nine and 16 years, attending school near a hospital in Gerede, Bolu. A significant positive correlation was found between the Tanner stage of breast development and BMI (r = 0.79, p < 0.001). Age also had a significant influence on BMI (r = 0.69, p < 0.001). After controlling the effects of age, BMI was highly correlated with weight (r = 0.82, p < 0.001) and the Tanner breast stage (r = 0.49, p < 0.001), but not with height. The correlation between BMI and the sexual stage was also found to increase with increasing age. But when breast development was taken as a control parameter, BMI was not statistically associated with age or height. As a result, there was a significant variation in BMI with the Tanner breast stage in addition to the well known change with increasing age in adolescent girls. Developmental differences occurring in the same age may require that BMI be evaluated only within the same sexual stages in adolescence. This study indicates that the curves of BMI need to take into account the sexual maturation stage of adolescents.
体重指数（BMI）用于儿童和青少年肥胖的临床评估。针对儿童和青少年的基于人群、种族特异性和年龄特异性的BMI曲线是存在的，但目前尚无基于性成熟的BMI曲线。本横断面研究的目的是调查青春期发育（根据坦纳乳房分期评估）对青春期女孩BMI的影响。研究组由167名年龄在9至16岁之间、在博卢省盖雷代一家医院附近上学的健康女孩组成。发现乳房发育的坦纳分期与BMI之间存在显著正相关（r = 0.79，p < 0.001）。年龄对BMI也有显著影响（r = 0.69，p < 0.001）。在控制年龄影响后，BMI与体重（r = 0.82，p < 0.001）和坦纳乳房分期（r = 0.49，p < 0.001）高度相关，但与身高无关。还发现BMI与性发育阶段之间的相关性随年龄增长而增加。但以乳房发育作为控制参数时，BMI与年龄或身高无统计学关联。因此，除了众所周知的青春期女孩BMI随年龄增长的变化外，BMI随坦纳乳房分期也存在显著差异。同一年龄出现的发育差异可能要求仅在青春期的同性发育阶段内评估BMI。本研究表明，BMI曲线需要考虑青少年的性成熟阶段。
