The allometric scaling of body mass and height in children and adolescents in five countries

Mazzeti, Camila Medeiros da Silva; Silva, Jéssica Cumpian; Rinaldi, Ana Elisa Madalena; Conde, Wolney Lisbôa

doi:10.1002/ajhb.23101

Cited by 5 publications

(17 citation statements)

References 21 publications

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“…This leads them to exhibit higher exponent values before boys, which adjusts the relation between weight and height [16]. A similar pattern was found by Mazzeti et al (2018); in their study, the highest exponents were found in girls 12 months before the boys [9]. The explanation for that is that sexual maturation is the main factor for increasing this exponent, so as it occurs before in girls than boys, it is expected that they have the highest p-coefficients first [16,19,49].…”

Section: Discussionsupporting

confidence: 70%

“…Nowadays, BMI-for-age growth charts are used internationally to assess the nutritional status of children and adolescents, despite some concerns about them [7]. One issue is the that BMI is a one-dimensional index, which applies a single exponent (2) to adjust the relation between height and weight [4,8,9]. This approach may not be adequate due to the non-uniform increase in body mass and height occurred in the physical growth process and sexual maturation [10–15].…”

Section: Introductionmentioning

confidence: 99%

“…In this way, research on allometric scaling has gained importance in the nutritional status assessment of children and adolescents [9,16–19]. Allometry refers to changes in the relative dimensions of body parts that correlate with changes in overall size [9].…”

Section: Introductionmentioning

confidence: 99%

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MULT: An allometric body mass index (ABMI) reference to assess nutritional status of multi-ethnic children and adolescents

de Oliveira,

Mazzeti,

Araújo

et al. 2024

Preprint

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ObjectivesTo develop an allometric body mass index (ABMI) reference that adjusts the weight in relation to height, taking into account the changes during development (MULT ABMI reference), and to compare it with international BMI references.MethodsThe MULT ABMI reference was constructed through the LMS method, calculated with 65 644 ABMI observations of 17 447 subjects aged 5-22 years, from the United Kingdom, Ethiopia, India, Peru, Vietnam, Portugal, and Brazil. The M, S, and L curves of the MULT ABMI reference were compared with the curves of the MULT, World Health Organization (WHO), Centers for Disease Control and Prevention (CDC), International Obesity Task Force (IOTF), and Dutch Growth Study (DUTCH).ResultsThe greater differences in the M curve between MULT ABMI and WHO, CDC, IOTF, DUTCH, and MULT BMI references were around puberty (138 to 150 months for boys; 114 to 132 for girls). MULT ABMI presented S values similar to IOTF and DUTCH BMI references for boys 60 to 114 months and then became higher, approaching the MULT BMI S values from 198 to 240 months. For girls the MULT ABMI S values were close to the IOTF, CDC, and DUTCH from 60 to 110 months, and then became higher, approaching the MULT BMI S values until 240 months.ConclusionMULT ABMI presented an advantage in comparison to the existing BMI references because it takes into account the growth changes during puberty and is a new option to assess the nutritional status of multi-ethnic populations.

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Section: Discussionsupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

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MULT: An allometric body mass index (ABMI) reference to assess nutritional status of multi-ethnic children and adolescents

de Oliveira,

Mazzeti,

Araújo

et al. 2024

Preprint

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show abstract

“…Indeed, BMI-for-age z-scores transformed (BMIz) has become the standard method to indicate the presence of overweight or obesity in this age group, because z-scores indicate the number of standard deviations above or below the mean for a reference group. Nevertheless, though the zscore correction is reasonable, as it provides sex and age adjustments, BMI may not be very accurate, as it has been shown that weight scales to height in a varied way, from an exponent close to 2.0 up to 3.5 depending on the stage of physical growth from birth to puberty 16 . Besides, using BMIz has been called into question for children with more severe obesity (>97 th percentile) 17 .…”

Section: Introductionmentioning

confidence: 99%

Ponderal index classifies obesity in children and adolescents more accurately than body mass index z-scores

et al. 2019

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BACKGROUND: We aimed to compare the accuracy of the ponderal index (PI) vs. BMI-forage z-scores transformed (BMIz) in estimating body fat levels and classifying obesity in children and adolescents from a Brazilian urban population. METHODS: This is a cross-sectional study with 1149 participants (53.2% male), aged 6 to 18 years. Body fat percent (BFP) was obtained by multi-frequency bioelectrical impedance. Non-linear regression analysis provided the accuracy of both BMIz and PI in estimating BFP. False positive rate was obtained from the proportion of individuals placed at or above the 95 th percentile for BMIz or PI, whereas their BFP was discordantly below the 95 th percentile. RESULTS: PI and BMIz appeared with similar stability from childhood to adolescence for both boys and girls. The portion of the variability in BFP explained by BMIz (R 2 = 0.74 and R 2 = 0.75) was close to the variability in BFP explained by PI (R 2 = 0.73 and R 2 = 0.75) for boys and girls, respectively. False positive rate was higher for BMIz compared with PI among boys (21.8% vs. 3.9%) and girls (28.5% vs. 17.5%). CONCLUSIONS: PI is a promising index for replacing BMIz in children and adolescents due to its potential to reduce false diagnosis of obesity.

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“…Como os estudos sugerem que não há alometria para crianças menores de cinco anos, apenas as medidas antropométricas de indivíduos a partir de cinco anos foram selecionadas para a construção das curvas de IAMC para a idade (47,49). O processo de seleção dos indivíduos e dos dados antropométricos da segunda etapa está apresentado na Figura 6. classificação da etnia em uma das quatro categorias: caucasianos, indianos, negros ou asiáticos do leste ou sudeste; e) tamanho da amostra por país ≥ 300 crianças (5,40,41).…”

Section: Conjunto Deunclassified

MULT - uma nova referência internacional para avaliação nutricional de crianças e adolescentes

Oliveira

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Agradeço de coração a todas as pessoas que tornaram possível a realização deste trabalho de pesquisa, que culmina com a conclusão deste doutorado. Este é um momento de profunda gratidão, e gostaria de expressar meus sinceros agradecimentos às seguintes pessoas e entidades:Em primeiro lugar, quero expressar minha gratidão a Deus e Nossa Senhora, cuja orientação espiritual e força me acompanharam ao longo dessa jornada acadêmica desafiadora.Suas bênçãos e inspiração foram fundamentais para que eu persistisse nos momentos difíceis.À minha família, em especial ao meu pai, que sempre acreditou em mim, me incentivou e me apoiou incondicionalmente. Sua confiança foi essencial para minha busca pelo conhecimento.Ao meu querido amigo-irmão Luís Jardim, que me apoiou durante todo o meu percurso acadêmico e me socorreu em várias análises estatísticas.Ao meu amado marido, Samuel Thé, que esteve ao meu lado em todas as etapas deste caminho. Sua paciência, compreensão e incentivo constante foram essenciais para que eu pudesse me dedicar à pesquisa.Ao meu orientador, Wolney Lisboa Conde, pela sua orientação sólida, conhecimento profundo e apoio inestimável ao longo de todo o processo de pesquisa. Suas orientações foram cruciais para o desenvolvimento deste trabalho. Às professoras ElisabeteRamos e Joana Araújo, pela orientação e suporte durante o período de pesquisa no exterior, que contribuíram significativamente para o aprimoramento deste estudo. Aos professores Camila Mazzeti, Milton Severo e Roberto Costa por todo o auxílio nas análises envolvendo a avaliação nutricional de menores de 20 anos e à Professora Aline Martins por me conceder a oportunidade de ser sua monitora nas disciplinas de Alimentação Coletiva e de fazer parte do Sustentarea. Foi uma honra trabalhar ao seu lado. Às queridas pesquisadoras do ISPUP, da Universidade do Porto, que me receberam de braços abertos e me proporcionaram um ambiente acolhedor durante o período em que estive na universidade. A generosidade e colaboração de vocês foi fundamental para o sucesso desta pesquisa. À Mabel, que me recebeu no "cafofo" do Niassa no Porto, proporcionando um lar acolhedor durante minha estadia na cidade. Sua amizade e hospitalidade tornaram minha experiência ainda mais especial. Às colegas do LANPOP, em especial, Débora Pereira, Iolanda Santos, Stephani Mashki, Graciela Gregolin, Claúdia Pastorello e Jéssica Cumpian-Silva, que compartilharam conhecimento e experiências, enriquecendo meu percurso acadêmico.

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The allometric scaling of body mass and height in children and adolescents in five countries

Abstract: Exclusion of VOESA contributes to a decreased effect of epidemiological context among countries when calculating the AI. AI calculated using ip is independent of height in all countries and reflects physiological growth changes for children and adolescents.

Cited by 5 publications

References 21 publications

MULT: An allometric body mass index (ABMI) reference to assess nutritional status of multi-ethnic children and adolescents

MULT: An allometric body mass index (ABMI) reference to assess nutritional status of multi-ethnic children and adolescents

Ponderal index classifies obesity in children and adolescents more accurately than body mass index z-scores

MULT - uma nova referência internacional para avaliação nutricional de crianças e adolescentes

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