Estimating body composition from skinfold thicknesses and bioelectrical impedance analysis in cystic fibrosis patients
| Autor: | Alberto Battezzati, Silvana Loi, Chiara Speziali, Maria Luisa Bianchi, Carla Colombo, Arianna Bisogno, Gianfranco Alicandro |
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| Rok vydání: | 2014 |
| Předmět: |
Pulmonary and Respiratory Medicine
Adult Male medicine.medical_specialty Adolescent Cystic Fibrosis Population Body fat percentage Cystic fibrosis Young Adult Fat free mass medicine Electric Impedance Humans education Child education.field_of_study business.industry Body fatness Individual level medicine.disease Surgery Skinfold Thickness Skinfold thickness Pediatrics Perinatology and Child Health Body Composition Female Nuclear medicine business human activities Bioelectrical impedance analysis |
| Zdroj: | Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society. 14(6) |
| ISSN: | 1873-5010 |
| Popis: | Background The accuracy of body composition estimates based on skinfold thickness measurements and bioelectrical impedance analysis (BIA) is not yet adequately explored in cystic fibrosis (CF). Using DXA as reference method we verified the accuracy of these techniques and identified predictors of body composition specific for CF. Methods One hundred forty-two CF patients (age range: 8–31years) underwent a DXA scan. Body fat percentage (BF%) was estimated from skinfolds, while fat free mass (FFM) from single-frequency 50kHz BIA. Results Bland–Altman analysis showed poor intra-individual agreement between body composition data provided by DXA and BF% estimated from skinfolds or FFM estimated from BIA. The skinfolds of the upper arm were better predictors of BF% than BMI, while compared to other BIA measurements the best predictor of FFM was the R-index (Height 2 /Resistance). Conclusions Due to poor accuracy at individual level, the estimates of body composition obtained from these techniques cannot be part of the standard nutritional assessment of CF patients until reliable CF-specific equations will become available. BMI has limited value in predicting body fatness in CF patients and should be used in combination with other predictors. Skinfolds of the upper arm and R -index are strongly related to BF% and FFM and should be tested in a large CF population to develop specific predictive equations. |
| Databáze: | OpenAIRE |
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