Equations based on anthropometry to predict body fat measured by absorptiometry in schoolchildren and adolescents
Objective: To develop and validate equations to estimate the percentage of body fat of children and adolescents from Mexico using anthropometric measurements. Methods: A cross‐sectional study was carried out with 601 children and adolescents from Mexico aged 5–19 years. The participants were randoml...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | Portuguese |
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Brazilian Society of Pediatrics
2017-07-01
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| Series: | Jornal de Pediatria (Versão em Português) |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2255553617300095 |
| _version_ | 1811323767080615936 |
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| author | Luis Ortiz-Hernández A. Valeria Vega López Norma Ramos-Ibáñez L. Joana Cázares Lara R. Joab Medina Gómez Diana Pérez-Salgado |
| author_facet | Luis Ortiz-Hernández A. Valeria Vega López Norma Ramos-Ibáñez L. Joana Cázares Lara R. Joab Medina Gómez Diana Pérez-Salgado |
| author_sort | Luis Ortiz-Hernández |
| collection | DOAJ |
| description | Objective: To develop and validate equations to estimate the percentage of body fat of children and adolescents from Mexico using anthropometric measurements.
Methods: A cross‐sectional study was carried out with 601 children and adolescents from Mexico aged 5–19 years. The participants were randomly divided into the following two groups: the development sample (n = 398) and the validation sample (n = 203). The validity of previously published equations (e.g., Slaughter) was also assessed. The percentage of body fat was estimated by dual‐energy X‐ray absorptiometry. The anthropometric measurements included height, sitting height, weight, waist and arm circumferences, skinfolds (triceps, biceps, subscapular, supra‐iliac, and calf), and elbow and bitrochanteric breadth. Linear regression models were estimated with the percentage of body fat as the dependent variable and the anthropometric measurements as the independent variables.
Results: Equations were created based on combinations of six to nine anthropometric variables and had coefficients of determination (r2) equal to or higher than 92.4% for boys and 85.8% for girls. In the validation sample, the developed equations had high r2 values (≥85.6% in boys and ≥78.1% in girls) in all age groups, low standard errors (SE ≤ 3.05% in boys and ≤3.52% in girls), and the intercepts were not different from the origin (p > 0.050). Using the previously published equations, the coefficients of determination were lower, and/or the intercepts were different from the origin.
Conclusions: The equations developed in this study can be used to assess the percentage of body fat of Mexican schoolchildren and adolescents, as they demonstrate greater validity and lower error compared with previously published equations. |
| first_indexed | 2024-04-13T14:02:25Z |
| format | Article |
| id | doaj.art-ad09c95998ca465897b7c31fbf940745 |
| institution | Directory Open Access Journal |
| issn | 2255-5536 |
| language | Portuguese |
| last_indexed | 2024-04-13T14:02:25Z |
| publishDate | 2017-07-01 |
| publisher | Brazilian Society of Pediatrics |
| record_format | Article |
| series | Jornal de Pediatria (Versão em Português) |
| spelling | doaj.art-ad09c95998ca465897b7c31fbf9407452022-12-22T02:44:01ZporBrazilian Society of PediatricsJornal de Pediatria (Versão em Português)2255-55362017-07-0193436537310.1016/j.jpedp.2017.02.006Equations based on anthropometry to predict body fat measured by absorptiometry in schoolchildren and adolescentsLuis Ortiz-HernándezA. Valeria Vega LópezNorma Ramos-IbáñezL. Joana Cázares LaraR. Joab Medina GómezDiana Pérez-SalgadoObjective: To develop and validate equations to estimate the percentage of body fat of children and adolescents from Mexico using anthropometric measurements. Methods: A cross‐sectional study was carried out with 601 children and adolescents from Mexico aged 5–19 years. The participants were randomly divided into the following two groups: the development sample (n = 398) and the validation sample (n = 203). The validity of previously published equations (e.g., Slaughter) was also assessed. The percentage of body fat was estimated by dual‐energy X‐ray absorptiometry. The anthropometric measurements included height, sitting height, weight, waist and arm circumferences, skinfolds (triceps, biceps, subscapular, supra‐iliac, and calf), and elbow and bitrochanteric breadth. Linear regression models were estimated with the percentage of body fat as the dependent variable and the anthropometric measurements as the independent variables. Results: Equations were created based on combinations of six to nine anthropometric variables and had coefficients of determination (r2) equal to or higher than 92.4% for boys and 85.8% for girls. In the validation sample, the developed equations had high r2 values (≥85.6% in boys and ≥78.1% in girls) in all age groups, low standard errors (SE ≤ 3.05% in boys and ≤3.52% in girls), and the intercepts were not different from the origin (p > 0.050). Using the previously published equations, the coefficients of determination were lower, and/or the intercepts were different from the origin. Conclusions: The equations developed in this study can be used to assess the percentage of body fat of Mexican schoolchildren and adolescents, as they demonstrate greater validity and lower error compared with previously published equations.http://www.sciencedirect.com/science/article/pii/S2255553617300095Body fatChildrenAdolescentsMexicoDual X‐ray absorptiometryAnthropometry |
| spellingShingle | Luis Ortiz-Hernández A. Valeria Vega López Norma Ramos-Ibáñez L. Joana Cázares Lara R. Joab Medina Gómez Diana Pérez-Salgado Equations based on anthropometry to predict body fat measured by absorptiometry in schoolchildren and adolescents Jornal de Pediatria (Versão em Português) Body fat Children Adolescents Mexico Dual X‐ray absorptiometry Anthropometry |
| title | Equations based on anthropometry to predict body fat measured by absorptiometry in schoolchildren and adolescents |
| title_full | Equations based on anthropometry to predict body fat measured by absorptiometry in schoolchildren and adolescents |
| title_fullStr | Equations based on anthropometry to predict body fat measured by absorptiometry in schoolchildren and adolescents |
| title_full_unstemmed | Equations based on anthropometry to predict body fat measured by absorptiometry in schoolchildren and adolescents |
| title_short | Equations based on anthropometry to predict body fat measured by absorptiometry in schoolchildren and adolescents |
| title_sort | equations based on anthropometry to predict body fat measured by absorptiometry in schoolchildren and adolescents |
| topic | Body fat Children Adolescents Mexico Dual X‐ray absorptiometry Anthropometry |
| url | http://www.sciencedirect.com/science/article/pii/S2255553617300095 |
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