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Title of Journal: Eur J Appl Physiol

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Abbravation: European Journal of Applied Physiology

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A comparison of dual energy X-ray absorptiometry and bioelectrical impedance analysis to measure total and segmental body composition in healthy young adults

Authors: Siobhan Leahy, Cian O’Neill, Rhoda Sohun, Philip Jakeman,

Publish Date: 2011/05/26
Volume: 112, Issue:2, Pages: 589-595
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The aim of this study was to investigate the accuracy of BIA in the measurement of total body composition and regional fat and the fat free mass in the healthy young adults. Four hundred and three healthy young adults (167 women and 236 men) aged 18–29 years were recruited from the Mid-West region of Ireland. Multi frequency, eight-polar bioelectrical impedance analysis (BIA) and dual energy X-ray absorptiometry (DXA) were used to measure the total body and segmental (arm, leg and trunk) fat mass and the fat free mass. BIA was found to underestimate the percentage total body fat in men and women (p 24.6% body fat and women with >32% body fat (p 25% total body fat. Though statistically significant, the small difference (~ 4%) between the methods indicates that the BIA may be used interchangeably with DXA in the measurement of appendicular fat free mass in healthy young adults.



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