Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Body composition in male elite athletes, comparison of bioelectrical impedance spectroscopy with dual energy X-ray absorptiometry | Journal of Negative Results in BioMedicine BioMed Central Research Open Access Body composition in male elite athletes comparison of bioelectrical impedance spectroscopy with dual energy X-ray absorptiometry Ulla Svantesson1 Martina Zander2 Sofia Klingberg2 and Frode Slinde 2 3 Address 1Institute of Neuroscience and Physiology Sahlgrenska Academy University of Gothenburg Sweden 2Department of Clinical Nutrition Sahlgrenska Academy University of Gothenburg Sweden and 3School of Life Sciences University of Skõvde Skõvde Sweden Email Ulla Svantesson - Martina Zander - Sofia Klingberg - Frode Slinde - Corresponding author Published 22 January 2008 Received 13 August 2007 Journal ofNegative Results in BioMedicine 2008 7 1 doi 1477-5751-7-1 Accepted 22 January 2008 This article is available from http content 7 1 1 2008 Svantesson et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background The aim of this study was to compare body composition results from bioelectrical spectroscopy BIS with results from dual energy X-ray absorptiometry DXA in a population of male elite athletes. Body composition was assessed using DXA Lunar Prodigy GE Lunar Corp. Madison USA and BIS Hydra 4200 Xitron Technologies Inc San Diego California USA at the same occasion. Agreement between methods was assessed using paired t-tests and agreementplots. Results Thirty-three male elite athletes soccer and ice hockey were included in the study. The results showed that BIS underestimates the proportion of fat mass by points in the ice hockey players. In soccer players the BIS resulted in a lower mean fat mass by .