Validation of anthropometric models in the estimation of appendicular lean soft tissue in young athletes
Magnetic resonance imaging and computer tomography are gold standards in the measurement of muscle tissue (MT), but are expensive. Dual Energy X-Ray Absorptiometry (DXA) is also costly but safer and allows for the measurement of Appendicular Lean Soft Tissue (ALST), a strong predictor of MT. Alterna...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Federal de Santa Catarina
2017-12-01
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| Series: | Revista Brasileira de Cineantropometria e Desempenho Humano |
| Subjects: | |
| Online Access: | https://periodicos.ufsc.br/index.php/rbcdh/article/view/52362 |
| _version_ | 1818408457551740928 |
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| author | Pedro Pugliesi Abdalla Analiza Mónica Silva Anderson dos Santos Carvalho Ana Claudia Rossini Venturini Thiago Cândido Alves André Pereira dos Santos Dalmo Roberto Lopes Machado |
| author_facet | Pedro Pugliesi Abdalla Analiza Mónica Silva Anderson dos Santos Carvalho Ana Claudia Rossini Venturini Thiago Cândido Alves André Pereira dos Santos Dalmo Roberto Lopes Machado |
| author_sort | Pedro Pugliesi Abdalla |
| collection | DOAJ |
| description | Magnetic resonance imaging and computer tomography are gold standards in the measurement of muscle tissue (MT), but are expensive. Dual Energy X-Ray Absorptiometry (DXA) is also costly but safer and allows for the measurement of Appendicular Lean Soft Tissue (ALST), a strong predictor of MT. Alternatively, there are anthropometric models that predict the ALST of Portuguese athletes with low cost/risk that have not been validated in other populations. The aim of this study was to validate anthropometric Portuguese models that predict ALST in young athletes or, if the validation fails, to propose new models. The ALSTDXA of 174 young athletes was determined by DXA. Two anthropometric models (ALSTmod1 and ALSTmod2) measuring ALST among Portuguese athletes were tested. To validate the coefficient of determination, the difference (bias) and concordance correlation coefficient between predicted and actual values were computed. Finally, association between mean and difference of methods was verified. Validation failed and, for this reason, new multiple regression models were proposed and validated using PRESS statistics. The Portuguese models explained ~96% of the ALSTDXA variability. The difference between ALSTmod1 and ALSTDXA (-0.7kg) was less than that found for the ALSTmod2 and ALSTDXA (-2.3kg), with limits of agreement from 3.6 to -2.1 and from 6.1 to -1.5kg, respectively. The new models included three predictive equations for ALST. Only ASLTmod1 was valid; however, it was prone to bias, depending on the magnitude of ALST values. The newly proposed models present validity with greater concordance (r²PRESS=0.98), lower standard error of estimate (SEEPRESS [kg]=0.91) and more homogeneous predicted extreme values. |
| first_indexed | 2024-12-14T09:44:02Z |
| format | Article |
| id | doaj.art-c4974c2118594e7198e80895f81d132f |
| institution | Directory Open Access Journal |
| issn | 1415-8426 1980-0037 |
| language | English |
| last_indexed | 2024-12-14T09:44:02Z |
| publishDate | 2017-12-01 |
| publisher | Universidade Federal de Santa Catarina |
| record_format | Article |
| series | Revista Brasileira de Cineantropometria e Desempenho Humano |
| spelling | doaj.art-c4974c2118594e7198e80895f81d132f2022-12-21T23:07:42ZengUniversidade Federal de Santa CatarinaRevista Brasileira de Cineantropometria e Desempenho Humano1415-84261980-00372017-12-0119550551410.5007/1980-0037.2017v19n5p50528104Validation of anthropometric models in the estimation of appendicular lean soft tissue in young athletesPedro Pugliesi Abdalla0Analiza Mónica Silva1Anderson dos Santos Carvalho2Ana Claudia Rossini Venturini3Thiago Cândido Alves4André Pereira dos Santos5Dalmo Roberto Lopes Machado6University of São PauloUniversity of LisbonUniversity of São PauloUniversity of São PauloUniversity of São PauloUniversity of São PauloUniversity of São PauloMagnetic resonance imaging and computer tomography are gold standards in the measurement of muscle tissue (MT), but are expensive. Dual Energy X-Ray Absorptiometry (DXA) is also costly but safer and allows for the measurement of Appendicular Lean Soft Tissue (ALST), a strong predictor of MT. Alternatively, there are anthropometric models that predict the ALST of Portuguese athletes with low cost/risk that have not been validated in other populations. The aim of this study was to validate anthropometric Portuguese models that predict ALST in young athletes or, if the validation fails, to propose new models. The ALSTDXA of 174 young athletes was determined by DXA. Two anthropometric models (ALSTmod1 and ALSTmod2) measuring ALST among Portuguese athletes were tested. To validate the coefficient of determination, the difference (bias) and concordance correlation coefficient between predicted and actual values were computed. Finally, association between mean and difference of methods was verified. Validation failed and, for this reason, new multiple regression models were proposed and validated using PRESS statistics. The Portuguese models explained ~96% of the ALSTDXA variability. The difference between ALSTmod1 and ALSTDXA (-0.7kg) was less than that found for the ALSTmod2 and ALSTDXA (-2.3kg), with limits of agreement from 3.6 to -2.1 and from 6.1 to -1.5kg, respectively. The new models included three predictive equations for ALST. Only ASLTmod1 was valid; however, it was prone to bias, depending on the magnitude of ALST values. The newly proposed models present validity with greater concordance (r²PRESS=0.98), lower standard error of estimate (SEEPRESS [kg]=0.91) and more homogeneous predicted extreme values.https://periodicos.ufsc.br/index.php/rbcdh/article/view/52362anthropometrybody compositiondxa scanskeletal musclesports |
| spellingShingle | Pedro Pugliesi Abdalla Analiza Mónica Silva Anderson dos Santos Carvalho Ana Claudia Rossini Venturini Thiago Cândido Alves André Pereira dos Santos Dalmo Roberto Lopes Machado Validation of anthropometric models in the estimation of appendicular lean soft tissue in young athletes Revista Brasileira de Cineantropometria e Desempenho Humano anthropometry body composition dxa scan skeletal muscle sports |
| title | Validation of anthropometric models in the estimation of appendicular lean soft tissue in young athletes |
| title_full | Validation of anthropometric models in the estimation of appendicular lean soft tissue in young athletes |
| title_fullStr | Validation of anthropometric models in the estimation of appendicular lean soft tissue in young athletes |
| title_full_unstemmed | Validation of anthropometric models in the estimation of appendicular lean soft tissue in young athletes |
| title_short | Validation of anthropometric models in the estimation of appendicular lean soft tissue in young athletes |
| title_sort | validation of anthropometric models in the estimation of appendicular lean soft tissue in young athletes |
| topic | anthropometry body composition dxa scan skeletal muscle sports |
| url | https://periodicos.ufsc.br/index.php/rbcdh/article/view/52362 |
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