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Bioelectrical impedance values among indigenous children and adolescents in Rio Grande do Sul, Brazil.

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Title: Bioelectrical impedance values among indigenous children and adolescents in Rio Grande do Sul, Brazil.
Alternate Title: Valores de impedancia bioeléctrica en niños y adolescentes indígenas en Rio Grande do Sul, Brasil.
Authors: Barufaldi, Laura Augusta1, Conde, Wolney Lisboa2, Schuch, Ilaine1, Duncan, Bruce Bartholow1, de Castro, Teresa Gontijo3 tgontijo108@gmail.com
Source: Pan American Journal of Public Health / Revista Panamericana de Salud Pública. Jul2011, Vol. 30 Issue 1, p39-45. 7p.
Subjects: INDIGENOUS youth, ANTHROPOMETRY, CHI-squared test, DIET, BIOELECTRIC impedance, NUTRITIONAL requirements, REGRESSION analysis, RESEARCH funding, BODY mass index, CROSS-sectional method, DATA analysis software
Geographic Terms: BRAZIL
Abstract (English): Objective. To describe the nutritional status of indigenous children and adolescents in Rio Grande do Sul, Brazil, through bioelectrical values, and to compare the nutritional classifications of the anthropometric method to those of the body composition method. Methods. A cross-sectional survey was conducted of 3 204 subjects at 35 schools in the 12 Kaingang indigenous lands of Rio Grande do Sul, Brazil. Following World Health Organization recommendations, the weight and height (H) of each subject was measured twice and the body mass index/age (BMI/A) was classified. Body composition was assessed by Bioelectrical Impedance Vector Analysis (BIVA). Resistance (R) and reactance (Xc) were estimated using a bioelectrical impedance analyzer. Divergences between these two methods were performed on RXc graph. Results. Of the sample, 56.8% were adolescents and 50.6% were males. The mean values of phase angle were higher in adolescents, in males, and in individuals overweight by BMI/A. Mean values of R, Xc, R/H, and Xc/H were higher among children and among those with BMI/A ≤ +2 z scores. Divergences in overweight classification were: male children, 94.6%; male adolescents, 77.1%; female children, 85.4%; and female adolescents, 94.8%. Conclusions. The mean values of bioelectrical measures observed among the Kaingang children and adolescent were similar to those found for different populations in other studies. For both gender and age groups, differences were observed between nutritional classifications by BMI/age and by BIVA. These results reinforce the importance of employing multiple techniques, such as anthropometry and BIVA, when conducting nutritional assessments of a population. [ABSTRACT FROM AUTHOR]
Abstract (Spanish): Objetivo. Describir el estado nutricional de ninos y adolescentes indigenas en Rio Grande do Sul, Brasil, mediante los valores de impedancia bioelectrica y comparar las clasificaciones nutricionales del metodo antropometrico con las del metodo de composicion corporal. Metodos. Se llevo a cabo un estudio transversal en 3 204 participantes de 35 escuelas de los 12 territorios indigenas habitados por el pueblo kaingang (o guayana) del estado de Rio Grande do Sul (Brasil). Segun las recomendaciones de la Organizacion Mundial de la Salud, se midio el peso y la talla (T) de cada participante en dos oportunidades y se clasifico el indice de masa corporal (IMC) segun la edad. La composicion corporal se evaluo mediante analisis vectorial de impedancia bioelectrica. La resistencia (R) y la reactancia (Xc) se calcularon con un analizador de impedancia bioelectrica. Las divergencias entre estos dos metodos se analizaron con un grafico RXc. Resultados. De la muestra, 56,8% eran adolescentes y 50,6% eran varones. Los valores medios del angulo de fase fueron mayores en los adolescentes, en los varones y en los individuos con sobrepeso segun el IMC/edad. Los valores medios de R, Xc, R/T y Xc/T fueron mayores en los ninos y en las personas con puntajes z de IMC/edad ≤ +2. Se observaron las siguientes divergencias en la clasificacion del sobrepeso: 94,6% para los ninos, 77,1% para los adolescentes, 85,4% para las ninas y 94,8% para las adolescentes. Conclusiones. Los valores medios de las medidas de impedancia bioelectrica observados en ninos y adolescentes kaingang fueron similares a los encontrados en diferentes poblaciones en otros estudios. Se observaron diferencias entre las clasificaciones nutricionales por IMC/edad y por analisis vectorial de impedancia bioelectrica en ambos sexos y grupos etarios. Estos resultados destacan la importancia de emplear multiples tecnicas, como la antropometria y el analisis vectorial de impedancia bioelectrica, cuando se efectuan evaluaciones nutricionales de una determinada poblacion. [ABSTRACT FROM AUTHOR]
Copyright of Pan American Journal of Public Health / Revista Panamericana de Salud Pública is the property of Pan American Health Organization and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Bioelectrical impedance values among indigenous children and adolescents in Rio Grande do Sul, Brazil.
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  Data: Objective. To describe the nutritional status of indigenous children and adolescents in Rio Grande do Sul, Brazil, through bioelectrical values, and to compare the nutritional classifications of the anthropometric method to those of the body composition method. Methods. A cross-sectional survey was conducted of 3 204 subjects at 35 schools in the 12 Kaingang indigenous lands of Rio Grande do Sul, Brazil. Following World Health Organization recommendations, the weight and height (H) of each subject was measured twice and the body mass index/age (BMI/A) was classified. Body composition was assessed by Bioelectrical Impedance Vector Analysis (BIVA). Resistance (R) and reactance (Xc) were estimated using a bioelectrical impedance analyzer. Divergences between these two methods were performed on RXc graph. Results. Of the sample, 56.8% were adolescents and 50.6% were males. The mean values of phase angle were higher in adolescents, in males, and in individuals overweight by BMI/A. Mean values of R, Xc, R/H, and Xc/H were higher among children and among those with BMI/A ≤ +2 z scores. Divergences in overweight classification were: male children, 94.6%; male adolescents, 77.1%; female children, 85.4%; and female adolescents, 94.8%. Conclusions. The mean values of bioelectrical measures observed among the Kaingang children and adolescent were similar to those found for different populations in other studies. For both gender and age groups, differences were observed between nutritional classifications by BMI/age and by BIVA. These results reinforce the importance of employing multiple techniques, such as anthropometry and BIVA, when conducting nutritional assessments of a population. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label: Abstract (Spanish)
  Group: Ab
  Data: Objetivo. Describir el estado nutricional de ninos y adolescentes indigenas en Rio Grande do Sul, Brasil, mediante los valores de impedancia bioelectrica y comparar las clasificaciones nutricionales del metodo antropometrico con las del metodo de composicion corporal. Metodos. Se llevo a cabo un estudio transversal en 3 204 participantes de 35 escuelas de los 12 territorios indigenas habitados por el pueblo kaingang (o guayana) del estado de Rio Grande do Sul (Brasil). Segun las recomendaciones de la Organizacion Mundial de la Salud, se midio el peso y la talla (T) de cada participante en dos oportunidades y se clasifico el indice de masa corporal (IMC) segun la edad. La composicion corporal se evaluo mediante analisis vectorial de impedancia bioelectrica. La resistencia (R) y la reactancia (Xc) se calcularon con un analizador de impedancia bioelectrica. Las divergencias entre estos dos metodos se analizaron con un grafico RXc. Resultados. De la muestra, 56,8% eran adolescentes y 50,6% eran varones. Los valores medios del angulo de fase fueron mayores en los adolescentes, en los varones y en los individuos con sobrepeso segun el IMC/edad. Los valores medios de R, Xc, R/T y Xc/T fueron mayores en los ninos y en las personas con puntajes z de IMC/edad ≤ +2. Se observaron las siguientes divergencias en la clasificacion del sobrepeso: 94,6% para los ninos, 77,1% para los adolescentes, 85,4% para las ninas y 94,8% para las adolescentes. Conclusiones. Los valores medios de las medidas de impedancia bioelectrica observados en ninos y adolescentes kaingang fueron similares a los encontrados en diferentes poblaciones en otros estudios. Se observaron diferencias entre las clasificaciones nutricionales por IMC/edad y por analisis vectorial de impedancia bioelectrica en ambos sexos y grupos etarios. Estos resultados destacan la importancia de emplear multiples tecnicas, como la antropometria y el analisis vectorial de impedancia bioelectrica, cuando se efectuan evaluaciones nutricionales de una determinada poblacion. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Pan American Journal of Public Health / Revista Panamericana de Salud Pública is the property of Pan American Health Organization and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 7
        StartPage: 39
    Subjects:
      – SubjectFull: INDIGENOUS youth
        Type: general
      – SubjectFull: ANTHROPOMETRY
        Type: general
      – SubjectFull: CHI-squared test
        Type: general
      – SubjectFull: DIET
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      – SubjectFull: BIOELECTRIC impedance
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      – SubjectFull: NUTRITIONAL requirements
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      – SubjectFull: REGRESSION analysis
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      – SubjectFull: RESEARCH funding
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      – SubjectFull: BODY mass index
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      – SubjectFull: CROSS-sectional method
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      – SubjectFull: DATA analysis software
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      – SubjectFull: BRAZIL
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      – TitleFull: Bioelectrical impedance values among indigenous children and adolescents in Rio Grande do Sul, Brazil.
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