Association of body composition and age at menarche in girls and adolescents in the Brazilian Legal Amazon

被引：7

作者：

Barcellos Gemelli, Ivanice Fernandes ^{[1
]}

Farias, Edson dos Santos ^{[2
]}

Spritzer, Poli Mara ^{[3
]}

机构：

[1] Univ Fed Rio Grande do Sul UFRGS, Dept Med, Posgrad Ginecol & Obstet PPGGO, Porto Alegre, RS, Brazil

[2] Univ Fed Rondonia UNIR, Dept Educ Fis, Porto Velho, RO, Brazil

[3] Univ Fed Rio Grande do Sul UFRGS, Dept Fisiol, Porto Alegre, RS, Brazil

来源：

JORNAL DE PEDIATRIA | 2020年 / 96卷 / 02期

关键词：

Menarche; Body composition; Body height; SECULAR TRENDS; OVERWEIGHT; WEIGHT;

D O I：

10.1016/j.jped.2018.10.012

中图分类号：

R72 [儿科学];

学科分类号：

100202 ;

摘要：

Objective: To analyze the association between age at menarche and variables of body composition in girls from the Northern region of Brazil, the Brazilian Legal Amazon. Method: The sample was composed of 926 school girls, aged between 8 and 18 years, divided into two groups, those who had (G1; n =727; 72.5%) and had not undergone menarche (G2; n= 199; 21.5%), from public and private schools, using the stratified random proportional sampling technique. Weight, fat weight, muscle weight, and body mass index were measured using bioimpedance analysis. Body height was measured using a stadiometer. Age at menarche was obtained using the conventional method. For the evaluation of sexual maturation, self-assessment was performed according to criteria described by Tanner. Results: The highest cumulative distribution of menarche was found at age 11, and presented significant differences between G1 and G2 at ages 11 and 12 years in all variables of body composition, except body mass index Z-score. Fat and muscle mass were associated with age at menarche. Conclusion: The present results support the notion of menarche anticipation in girls from Brazilian Amazon and its association with body composition. Further studies are needed to investigate the influence of other possible factors that may interfere with the time of growth spurt, thus determining the timing of puberty in these girls in comparison to other regions of Brazil. (C) 2018 Sociedade Brasiteira de Pediatria. Published by Elsevier Editora Ltda.

引用

页码：240 / 246

页数：7

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