Single prediction equation for bioelectrical impedance analysis in adults aged 22-59 years

Autor:	D. P. Patkar, S. A. Mandlik, M. M. Kuswarkar, G. D. Jindal, B. R. Patil
Rok vydání:	2011
Předmět:	Adult Male medicine.medical_specialty business.industry Mean squared prediction error Biomedical Engineering Healthy subjects General Medicine Middle Aged Surgery Young Adult Animal science Standard error Absorptiometry Photon Bone Density medicine Single equation Electric Impedance Bone mineral content Humans Osteoporosis Female business Bioelectrical impedance analysis Body mass index
Zdroj:	Journal of medical engineeringtechnology. 35(2)
ISSN:	1464-522X
Popis:	The purpose of this study was to validate a single bioelectrical impedance analysis (BIA) equation in healthy Indian subjects aged 22-59 years with a body mass index (BMI) between 16.8 and 47.3 kg m⁻². Healthy subjects (34 men and 30 women) were measured by two methods: bone mineral content (BMC) was measured by a commercial body composition analyser and bioelectrical impedance at various frequencies was measured by a newly developed bioelectrical impedance measurement system. As correlations were high and prediction error was low, a single equation was developed using all subjects as follows: BMC = -3.5268 + (0.0279 x h) + (0.0145 x w) + (184 x (h²/Z(body50)))-(1.08 x (w x h²/Z(body6.25)))-(0.0032 x (age))-(0.103 x (sex); men = 1, women = 0). BMC measured from commercial instrument InBody720 was 2.552 ± 0.457 kg. BMC predicted by equation was 2.554 ± 0.447 kg (R = 0.976, adjusted R² = 0.948, standard error of estimate = 0.104 kg, total error = 0.09987 kg). The results of this study show that the newly developed multi-frequency bioelectrical impedance measurement system with the single prediction BIA equation can be used in screening the subjects suspected with osteoporosis and for follow-up study of the patient under the therapy for osteoporosis. For validation of commercial instrument InBody720, BMC of 22 healthy subjects was measured by InBody720 and dual-energy X-ray absorptiometry. High correlation (R = 0.9531) and low error (total error = 0.0913 kg) was found between these two methods.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05d9f5abe83e1d78cb2d0a32e4d7c767 https://pubmed.ncbi.nlm.nih.gov/21231827 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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