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

Takahashi, Lívia Akemi Ramos; Figueiredo, Francisco Winter dos Santos; Benedet, Jucemar; Vasconcelos, Francisco de Assis Guedes de; Adami, Fernando

doi:10.1186/s13104-019-4095-5

Cited by 12 publications

(8 citation statements)

References 29 publications

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“…Chiocca et al [55] showed that during treatment FFM decreased and %FM increased, whereas BMI did not change at adult height and suggested that the findings may be related to shortening of the prepubertal developmental window for body composition. In an earlier study, Chiumello et al [45] showed a small group of children with CPP was slightly fatter with less lean compartment mass than age- matched controls at adult height. They suggested that reduction in the time for prepubertal lean mass development might lead to reduced lean mass in this group of patients [56].…”

Section: Body Composition In Precocious Puberty and The Effect Of Gnr...mentioning

confidence: 94%

“…Recently, Takahashi et al [45] showed that precocious sexual maturation was associated with increased adiposity indicators only in girls, whereas late maturation was associated with decreased adiposity in both sexes. During treatment with GnRHa therapy, some studies showed no change [1], while some showed an increase in BMI especially in the first year of treatment [46].…”

Section: Effects Of Gnrha Treatment On Bmi Fat Mass and Fat-free Massmentioning

confidence: 99%

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Body composition in sexual precocity

Gönç¹,

Kandemir²

2021

Current Opinion in Endocrinology, Diabetes &Amp; Obesity

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Purpose of reviewIn this review, we have summarized the current data on the effect of sexual precocity and treatment with gonadotropin-releasing hormone analogues (GnRHa) on body composition. Recent findingsHigher body weight and weight gain in infancy and childhood may increase the risk of early puberty in girls. The relation between BMI and pubertal onset in boys is controversial. Current studies draw attention to the fact that a similar relationship may exist in boys too. Obesity prevalence is high among girls with central precocious puberty (CPP) and treatment with GnRHa has a different effect on BMI according to baseline body composition. Although BMI values of normal weight girls tend to increase under treatment, they return to normal following treatment. The few studies that have followed up body composition longitudinally in girls show a gradual increase in adiposity, decrease in muscle mass and bone mineral density during GnRHa treatment, whereas bone mass was preserved after treatment. Adequate data are not available in boys to determine the effect of GnRHa therapy on body composition.

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Section: Body Composition In Precocious Puberty and The Effect Of Gnr...mentioning

confidence: 94%

Section: Effects Of Gnrha Treatment On Bmi Fat Mass and Fat-free Massmentioning

confidence: 99%

Body composition in sexual precocity

Gönç¹,

Kandemir²

2021

Current Opinion in Endocrinology, Diabetes &Amp; Obesity

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“…The other variables that entered the model were weight, Xc, sex, and age. Considering that adolescence is a phase of profound morphological changes, which include body composition ( 4 , 50 , 51 ), and that the age at which each stage of puberty occurs can vary considerably ( 52 ), we listed the pubertal stage among the possible independent variables; however, this variable was not included in the model by the stepwise regression. The same was verified in the other studies that proposed predictive equations of FFM by BIA in adolescents, which we tested for validity in the sample of this study ( 15 , 23 , 24 , 40 – 44 ).…”

Section: Discussionmentioning

confidence: 99%

Development and Cross-Validation of a Predictive Equation for Fat-Free Mass in Brazilian Adolescents by Bioelectrical Impedance

et al. 2022

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The bioelectrical impedance analysis (BIA) is one of the most commonly used techniques for assessing body composition in a clinical setting and in field approaches, as it has the advantages of easy application, fast, and non-invasive, in addition to its relatively low cost. However, the available predictive equations need to be valid for the evaluated subjects. The aim of this study was to verify the validity of several published BIA equations in estimating fat-free mass (FFM) among Brazilian adolescents, in addition to developing and cross-validating a BIA equation to estimate FFM appropriate for Brazilian adolescents. This is a cross-sectional study with 257 adolescents (128 girls) aged 10–19 years, randomly divided into two groups, namely, development (n = 172) and cross-validation (n = 85). The standard technique for assessing FFM was dual X-ray absorptiometry (DXA). The paired t-test, multiple regression, and the Bland-Altman plots were used to test the validity of the proposed models and to perform cross-validation of the model. The equation derived in this study was as follows: FFM = −17.189 + 0.498 (Height2/Resistance) + 0.226 Weight + 0.071 Reactance − 2.378 Sex + 0.097 Height + 0.222 Age; r2 = 0.92; standard error of the estimate = 2.49 kg; the new equation for FFM showed better agreement when compared with that of the equations developed in other countries. In conclusion, the newly developed equations provide a valid FFM estimation and are recommended for Brazilian adolescents with similar characteristics.

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“…Gonçalves et al [16] state there is an increase in body mass as the pre-pubertal individual moves to the pubescent and post-pubescent stages. As for body composition, it is believed that the higher percentage of body fat in pre-infants, concerning children, is related to the process of energy repletion, characteristic of the pre-pubertal phase, and so necessary for future development (pubertal spurt) [17]. The lower percentage of fat mass found in children's gymnasts can also be linked to the stage of sexual maturation, since practically half of the group is pubescent, and according to Fidencio et al [18], this is the stage in which the spurt usually occurs, favoring the reduction of fat mass.…”

Section: Discussionmentioning

confidence: 99%

Comportamentos de risco para deficiência de energia relativa no esporte em jovens ginastas rítmicas brasileiras de alto rendimento

Marques¹,

Menezes²,

Silva³

et al. 2022

Rev Bras Fisiol Exerc

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Introdução: A ginástica rítmica é uma modalidade esportiva estética, cujas regras encorajam biotipo longilíneo e magro, expondo ginastas ao risco de deficiência energética relativa no esporte (RED-S). Objetivo: Analisar comportamentos de risco para RED-S em ginastas brasileiras de alto rendimento de categorias pré-infantil, infantil e juvenil, com destaque nacional e internacional. Métodos: 36 atletas brasileiras (10 pré-infantis, 9 infantis e 17 juvenis) foram avaliadas quanto à composição corporal, maturação sexual e risco de transtornos alimentares. A investigação de volume de treinamento, ciclos menstruais, monitoramento de densidade mineral óssea e de exames laboratoriais, ocorrência de fratura por estresse, acompanhamento nutricional especializado e consumo de suplementos alimentares realizou-se por questionário de Ackerman adaptado. Resultados: As ginastas apresentaram volume de treinamento semanal de 27,32 horas, % de massa gorda de 12,1 ± 2,8, sendo as infantis as de menor adiposidade. Quanto à maturação sexual, 66,1% encontravam-se na fase púbere, e nenhuma atleta chegou à fase pós-púbere. A frequência de risco de transtornos alimentares foi de 55,6%, sendo as juvenis mais afetadas (70,6%). Apenas 47,1% das juvenis apresentaram menarca. Somente 36,1% têm acesso a nutricionista esportivo, enquanto 16,7% avaliaram a densidade mineral óssea ao menos uma vez na carreira, e 52,8% realizam exames laboratoriais regularmente. Foi relatada fratura por estresse por 22,2% das ginastas, sendo 44,4% nas juvenis. Encontrou-se suplementação alimentar em 36,1% das ginastas, com destaque para vitaminas C e D e proteínas. Conclusão: Foram encontrados comportamentos de risco para RED-S em jovens ginastas rítmicas brasileiras de alto rendimento, com destaque para transtornos alimentares, especialmente na categoria juvenil.

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

Cited by 12 publications

References 29 publications

Body composition in sexual precocity

Body composition in sexual precocity

Development and Cross-Validation of a Predictive Equation for Fat-Free Mass in Brazilian Adolescents by Bioelectrical Impedance

Comportamentos de risco para deficiência de energia relativa no esporte em jovens ginastas rítmicas brasileiras de alto rendimento

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