Association between BMI and age at menarche in girls from different socio-economic groups

Wronka, Iwona

doi:10.1127/0003-5548/2010/0066

Cited by 36 publications

(27 citation statements)

References 28 publications

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“…Além desses, o número de filhos na família, o salário, a ocupação e o nível educacional dos pais influenciam indiretamente a maturação e, consequentemente, a idade da menarca numa mesma população (17). Wonka também observou que a relação entre o IMC e a idade da menarca ocorre em todas as camadas sociais (18). O presente estudo abordou meninas de uma mesma camada social (alunas de escolas particulares) com o intuito de diminuir o viés.…”

Section: Resultsunclassified

“…O presente estudo abordou meninas de uma mesma camada social (alunas de escolas particulares) com o intuito de diminuir o viés. A antecipação foi maior no grupo com excesso de peso, corroborando os dados de outras pesquisas que apontam que a menarca ocorre mais cedo nas meninas obesas (8,18). Nas últimas décadas, as estatísticas sobre a saúde dos brasileiros melhoraram bastante, principalmente no que se refere à saúde infantil (19).…”

Section: Resultsunclassified

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Tendência secular da idade da menarca avaliada em relação ao índice de massa corporal

Castilho

Pinheiro

Bento

et al. 2012

Arq Bras Endocrinol Metab

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RESUMOObjetivo: Avaliar a tendência secular da menarca de acordo com o índice de massa corporal (IMC). Sujeitos e métodos: Seiscentos e oitenta e cinco meninas (7-18 anos) ABSTRACTObjective: To evaluate the secular trend of menarche according to body mass index (BMI). Subjects and methods: Six hundred and eighty five girls (7-18 years) assessed in 2001 were compared with 750 evaluated in 2010. They were grouped by BMI Z-score: (thin + normal) and (overweight + obese). Menarche was reported by status quo and age at menarche estimated by a logit model. We used the Qui-square test, Mann-Whitney test, and Logistic Regression, at a 5% significance level. Results: Menarche advanced 3.24 months. There was an increase in obesity, and a decrease of the prevalence of normal girls. Menarche was anticipated by 1.44 month in the thin + normal group and by 5.76 months in the overweight + obese group. There was no interaction between the effects determined by the evaluated period and nutritional diagnosis. Conclusions: Although both the period and BMI influence the menarche, one cannot attribute this advance only to changes in the nutritional profile of the sample. Other factors that were not tested may also contribute to this finding. INTRODUÇÃO A menarca corresponde a um evento tardio da puberdade e é importante indicador da maturação sexual. A tendência à antecipação da idade em que ela ocorre, observada por décadas nos países desenvolvidos, sempre foi relacionada à melhora das condições de vida e saúde da população, particularmente do acesso aos alimentos (1-3).

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Section: Resultsunclassified

Tendência secular da idade da menarca avaliada em relação ao índice de massa corporal

Castilho

Pinheiro

Bento

et al. 2012

Arq Bras Endocrinol Metab

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“…Delayed puberty within ballet dancers(Warren et al, 2002), gymnasts (Rogol, Clark, & Roemmich, 2000), extreme athletes(Constantini & Warren, 1995; Roemmich, Richmond, & Rogol, 2001), and individuals with anorexia(Kholy, Job, & Chaussain, 1986) or malnourishment (Martorell, 2010) can be recast as the impact of low caloric intake on growth and reproductive development. Early maturation within overweight or obese youth also illustrates the impact of caloric intake on developmental trajectories (Castilho, Pinheiro, Bento, Barros-Filho Ade, & Cocetti, 2012; Wronka, 2010). The secular trend for earlier puberty across the past 150 years in westernized societies adds evidence to the removal of the energetics-based delay of maturation (Worthman, 1999).…”

Section: Introductionmentioning

confidence: 99%

A dual‐axis approach to understanding neuroendocrine development

Shirtcliff

Dismukes

Marceau

et al. 2015

Developmental Psychobiology

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This paper on ‘a dual-axis approach to understanding neuroendocrine development’ sets out to introduce a series of paper about a novel perspective regarding stress and sex hormones, or what the authors within this special issue term ‘coupling’ of hypothalamic-pituitary-adrenal and –gonadal axes. This view postulates that these axes do not necessarily operate in opposition, but can operate together as evidenced empirically as a positive within-person association between stress hormones like cortisol or sex hormones like testosterone. A wealth of papers within the special issue demonstrate positive coupling across acute, diurnal, basal, and longitudinal timeframes and across several different types of contexts. Reviews were meant to challenge whether this was physiologically plausible. Consistently, sophisticated statistical models were utilized in order to show a template for how to model positive coupling and to ensure that coupling was a within-person phenomenon. We cautiously considered positive coupling until the consistency of observing positive coupling was robust enough for us to consider challenging the prevailing oppositional view of these axes. We do so to acknowledge that there are contexts, moments and stages in which the function of these axes should work together: for example when contexts are both stressful and challenging or at developmental stages (like adolescence) in which the youth must grow up despite the storm and stress of youth. We hope that by putting forward a functional dual-axis approach, the field will be able to consider when and how a dual-axis approach is useful.

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“…Age at menarche is determined by multiple factors such as nutritional status, ethnic or racial background, birth weight, and mother's age at menarche, among others 1,2,3,4 .…”

Section: Introductionmentioning

confidence: 99%

Socioeconomic status and age at menarche in indigenous and non-indigenous Chilean adolescents

et al. 2012

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Association between BMI and age at menarche in girls from different socio-economic groups

Cited by 36 publications

References 28 publications

Tendência secular da idade da menarca avaliada em relação ao índice de massa corporal

Tendência secular da idade da menarca avaliada em relação ao índice de massa corporal

A dual‐axis approach to understanding neuroendocrine development

Socioeconomic status and age at menarche in indigenous and non-indigenous Chilean adolescents

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