Median ages at stages of sexual maturity and excess weight in school children

Luciano, Alexandre de Paiva; Benedet, Jucemar; Abreu, Luíz Carlos de; Valenti, Vítor Engrácia; Almeida, Fernando; Vasconcelos, Francisco de Assis Guedes de; Adami, Fernando

doi:10.1186/1742-4755-10-56

Cited by 12 publications

(7 citation statements)

References 36 publications

(37 reference statements)

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“…The sampling procedure is described in detail elsewhere [20][21][22][23]. Briefly, for sample size calculation, the following parameters were assumed: excess weight prevalence of 22.1% for children aged 7-10 years [24] and 12.6% for those aged 11-14 years [25]; acceptable error of 3 percentage points; two-tailed test; confidence level of 95%; design effect of 1.5; and an addition of 10% for losses.…”

Section: Methodsmentioning

confidence: 99%

Association between pubertal development stages and body adiposity in children and adolescents

Adami

Benedet

Takahashi

et al. 2020

Health Qual Life Outcomes

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Background:The study aimed to analyze the association between pubertal development stages and adiposity in children and adolescents. Methods: Cross-sectional study conducted in 2007 in Florianópolis, Brazil, with 2339 schoolchildren 32 aged 8 to 14 years old (1107 males). The outcome (adiposity) was evaluated using Z score and 33 percentilee values > = 85 of four skinfolds (triceps, subscapular, suprailiac and calf) and waist 34 circumference. Total body adiposity (Z score of the sum of skinfolds), central adiposity (Z score 35 of waist circumference) and peripheral adiposity (Z scores of triceps and calf skinfolds) were 36 estimated. Pubertal development stages was self-assessed according to Tanner stages of development. Thirty-seven Children and adolescents were classified according to tertiles of age for each pubertal development stages 38 stage -early, normal and late. Statistical analysis was performed using univariate and 39 multivariate Poisson regression models. Results: Children and adolescent from both sexes with early pubertal development stages presented higher prevalence of central adiposity (waist circumference), with adjusted prevalence ratio (CI 95%) of 2.21 (1.12; 4.35) for males and 2.18 (1.04; 4.57) for females (reference group: normal pubertal development stages). Among females, there was a reduction in the prevalence of excess adiposity with decreased occurrence of early pubertal development stages. There was a strong relationship between adiposity and pubertal development stages. Conclusions: Excess adiposity was higher in both sexes for those with early pubertal development stages.

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Section: Methodsmentioning

confidence: 99%

Association between pubertal development stages and body adiposity in children and adolescents

Adami

Benedet

Takahashi

et al. 2020

Health Qual Life Outcomes

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“…Although several other studies have examined the association between sexual maturation status and obesity [15, 17, 24, 25], few studies have related sexual maturation to adiposity indicators. To our knowledge, this is one of the first studies to analyze the influence of sexual maturation status on the relationship between increased body adiposity and age in Brazilian children.…”

Section: Discussionmentioning

confidence: 99%

Influence of sexual maturation status on the relationship between body adiposity indicators and age: a cross-sectional study

et al. 2019

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ObjectivesTo determine the influence of sexual maturation status on adiposity indicators of children and adolescents.Results2412 individuals participated, 1285 (47.4%) males and 1408 (52.6%) females. There was moderate to weak correlation between age and adiposity indicators for both sexes. By analyzing the relationship between age and body fat indexes adjusted for Sexual Maturation Status, several changes were observed, mainly in girls. Precocious maturation was associated with increased adiposity indicators in girls, whereas late maturation was associated with decreased adiposity indicators in both sexes. Precocious maturation was associated with increased adiposity indicators in girls, whereas late maturation was associated with decreased adiposity indicators in both sexes.Electronic supplementary materialThe online version of this article (10.1186/s13104-019-4095-5) contains supplementary material, which is available to authorized users.

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“…The final sample consisted of 2506 schoolchildren in 2012 (87% of 2880 students). The sampling procedure is described in detail elsewhere (D'Avila et al, 2016; Luciano et al, 2013).…”

Section: Methodsmentioning

confidence: 99%

“…IBGE, 2010). Previous studies in schoolchildren from Florianópolis , a city in the Southern Brazil, have demonstrated an increase in the prevalence of overweight (including obesity) from 2007 (34.4% for boys and 24.0% for girls) (Luciano et al, 2013) to 2012 (37.6% for boys and 29.0% for girls) (Corrêa et al, 2018).…”

Section: Introductionmentioning

confidence: 98%

Assessment of the median ages at sexual maturation stages of Brazilian schoolchildren according to overweight status and type of school over a 5‐year period: 2007–2012/2013

Matsuo

Adami

Silva

et al. 2021

American J Hum Biol

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Objectives A secular trend of earlier puberty has been observed in girls, and, although more uncertain in boys, is associated with an increasing trend in the prevalence of overweight and obesity. We aimed to compare the median ages of sexual maturation stages in schoolchildren from a city in southern Brazil over a 5‐year period, according to weight status and type of school. Methods Two cross‐sectional studies were performed in 2007 and 2012/2013, including 2215 and 1614 schoolchildren, respectively. Body mass index z‐scores were calculated and categorized as either nonoverweight or overweight (including obesity). The type of school was categorized as either public or private. Sexual maturation was self‐assessed according to the Tanner stages. Mann–Whitney and Kruskal–Wallis tests were performed to compare the median ages of sexual maturation stages. Results The median age decreased for almost all stages over the 5‐year period in both sexes. In boys, the decrease ranged from 0.3 to 1.0 years (stages 2, 3, 4, and 5 for genitalia, and stages 2 and 4 for pubic hair), and from 0.3 to 0.7 years (stages 2, 3, and 4 for breast, and stages 3, 4, and 5 for pubic hair). In 2012, overweight students had lower median ages for most stages compared to those in 2007, especially in girls. Differences by type of school were balanced across years. Conclusions The median age of Tanner's stages after 5 years was reduced in both sexes. In overweight girls, the reduction was more pronounced. The results by type of school were inconsistent.

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Median ages at stages of sexual maturity and excess weight in school children

Cited by 12 publications

References 36 publications

Association between pubertal development stages and body adiposity in children and adolescents

Association between pubertal development stages and body adiposity in children and adolescents

Influence of sexual maturation status on the relationship between body adiposity indicators and age: a cross-sectional study

Assessment of the median ages at sexual maturation stages of Brazilian schoolchildren according to overweight status and type of school over a 5‐year period: 2007–2012/2013

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