Zurlo de Mirotti S M, Lesa A M, Barrón de Carbonetti M, Roitter H, Villagra de Lacuara S
Centro Universitario de Atención del Adolescente.
Rev Fac Cien Med Univ Nac Cordoba. 1995;53 Suppl:23-30.
Our aim was to confirm in our environment what has been observed and described by other writers about the importance of achieving a "critical body weight'' and an adequate "fat percentage'' -on the basis of the calculation of total body water- for the initiation and development of pubertal events. This study included 92 girls, healthy, well nourished, belonging to upper middle class from a high school of The National University of Cordoba. The longitudinal method of control was used every 6 months and at the precise moment of menarche. Out of 20 antropometrical variables observed height, weight and height, TBW as percentage of body weight, lean body and fat weight, fat percentage and skin folds ppercentiles for each girl at menarche. A regression between fat percentage and skin folds was done. Percentiles 5 to 95 of fat percentage in relation to body water percentage were estimated. At menarche the average for the different variables are: Heigth 155.6 cm +/- 0.469; Weight 45.8 Kg +/- 0,5; TBW 25.216 lit. +/- 0.318; lean body weigth 35.02 Kg (S.D.2.98); fat weigth 10.86 Kg (S. D. 3.17). The addition of skin folds was correlated fat percentage, thus, an equation was obtained for the average calculation of such percentage %F= 12.16 + (0.313 x fold addition). The minium percentage for the onset of menstrual cycles is 17.3% and corresponds to percentile 10. However, there is a 5% of girls who start to menstruate with a 15.5% of fat and none of them is below that value. The reasons mentioned above suggest that is necessary to obtain a "critical body weigth'' as well as a "fat percentage'' minimum for the onset and maintenance of menstrual cycles, among our girls, similar o what has been obtained by doctor Frisch.
我们的目的是在我们的环境中证实其他作者所观察和描述的内容，即在基于总体水计算的基础上，达到“临界体重”和足够的“脂肪百分比”对于青春期发育事件的启动和发展的重要性。本研究纳入了92名健康、营养良好的女孩，她们来自科尔多瓦国立大学一所高中的中上层阶级。采用纵向对照方法，每6个月进行一次，并在月经初潮的精确时刻进行。在观察的20项人体测量变量中，记录了每个女孩月经初潮时的身高、体重、身高、体重中总体水的百分比、瘦体重和脂肪重量、脂肪百分比以及皮褶厚度百分位数。对脂肪百分比和皮褶厚度进行了回归分析。估计了脂肪百分比相对于身体水分百分比的第5至95百分位数。月经初潮时不同变量的平均值为：身高155.6厘米±0.469；体重45.8千克±0.5；总体水25.216升±0.318；瘦体重35.02千克（标准差2.98）；脂肪重量10.86千克（标准差3.17）。皮褶厚度总和与脂肪百分比相关，因此得到了一个用于计算该百分比的平均值的方程：%F = 12.16 + (0.313×皮褶厚度总和)。月经周期开始的最低百分比为17.3%，对应第10百分位数。然而，有5%的女孩在脂肪含量为15.5%时开始月经，且没有低于该值的情况。上述原因表明，在我们的女孩中，为了月经周期的开始和维持，有必要获得“临界体重”以及最低的“脂肪百分比”，这与弗里施医生所得到的结果类似。
