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Open AccessArticle

Comparison of Bioelectrical Impedance-Based Methods on Body Composition in Young Patients with Obesity

1
Division of Pediatric Pulmonology, Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Waehringer Guertel 18–20, 1090 Vienna, Austria
2
Institute of Health Sciences, St. Pölten University of Applied Sciences, Matthias-Corvinus-Straße 15, 3100 St. Pölten, Austria
3
Department of Physiotherapy, St. Pölten University of Applied Sciences, Matthias-Corvinus-Straße 15, 3100 St. Pölten, Austria
4
Gender Medicine Unit, Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Waehringer Guertel 18–20, 1090 Vienna, Austria
5
Division of Neuro- and Musculoskeletal Radiology, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Waehringer Guertel 18–20, 1090 Vienna, Austria
*
Author to whom correspondence should be addressed.
Academic Editor: Odysseas Androutsos
Children 2021, 8(4), 295; https://doi.org/10.3390/children8040295
Received: 3 March 2021 / Revised: 3 April 2021 / Accepted: 7 April 2021 / Published: 11 April 2021
(This article belongs to the Special Issue Body Composition in Children)
(1) Background: The determination of body composition is an important method to investigate patients with obesity and to evaluate the efficacy of individualized medical interventions. Bioelectrical impedance-based methods are non-invasive and widely applied but need to be validated for their use in young patients with obesity. (2) Methods: We compiled data from three independent studies on children and adolescents with obesity, measuring body composition with two bioelectrical impedance-based devices (TANITA and BIACORPUS). For a small patient group, additional data were collected with air displacement plethysmography (BOD POD) and dual-energy X-ray absorptiometry (DXA). (3) Results: Our combined data on 123 patients (age: 6–18 years, body mass index (BMI): 21–59 kg/m²) and the individual studies showed that TANITA and BIACORPUS yield significantly different results on body composition, TANITA overestimating body fat percentage and fat mass relative to BIACORPUS and underestimating fat-free mass (p < 0.001 for all three parameters). A Bland–Altman plot indicated little agreement between methods, which produce clinically relevant differences for all three parameters. We detected gender-specific differences with both methods, with body fat percentage being lower (p < 0.01) and fat-free mass higher (p < 0.001) in males than females. (4) Conclusions: Both bioelectrical impedance-based methods provide significantly different results on body composition in young patients with obesity and thus cannot be used interchangeably, requiring adherence to a specific device for repetitive measurements to ascertain comparability of data. View Full-Text
Keywords: pediatric obesity; body composition analysis; bioelectrical impedance analysis; air displacement plethysmography; DXA; body fat percentage; fat mass; fat free mass pediatric obesity; body composition analysis; bioelectrical impedance analysis; air displacement plethysmography; DXA; body fat percentage; fat mass; fat free mass
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MDPI and ACS Style

Thajer, A.; Skacel, G.; Truschner, K.; Jorda, A.; Vasek, M.; Horsak, B.; Strempfl, J.; Kautzky-Willer, A.; Kainberger, F.; Greber-Platzer, S. Comparison of Bioelectrical Impedance-Based Methods on Body Composition in Young Patients with Obesity. Children 2021, 8, 295. https://doi.org/10.3390/children8040295

AMA Style

Thajer A, Skacel G, Truschner K, Jorda A, Vasek M, Horsak B, Strempfl J, Kautzky-Willer A, Kainberger F, Greber-Platzer S. Comparison of Bioelectrical Impedance-Based Methods on Body Composition in Young Patients with Obesity. Children. 2021; 8(4):295. https://doi.org/10.3390/children8040295

Chicago/Turabian Style

Thajer, Alexandra; Skacel, Gabriele; Truschner, Katharina; Jorda, Anselm; Vasek, Martin; Horsak, Brian; Strempfl, Johanna; Kautzky-Willer, Alexandra; Kainberger, Franz; Greber-Platzer, Susanne. 2021. "Comparison of Bioelectrical Impedance-Based Methods on Body Composition in Young Patients with Obesity" Children 8, no. 4: 295. https://doi.org/10.3390/children8040295

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