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Medical & Biological Engineering & Computing

, Volume 47, Issue 12, pp 1265–1271 | Cite as

Effectiveness of thigh-to-thigh current path for the measurement of abdominal fat in bioelectrical impedance analysis

  • Ki Hwan Hong
  • Yong Gyu Lim
  • Kwang Suk ParkEmail author
Original Article

Abstract

We present a new method measuring body impedance using a thigh-to-thigh current path, which can reflect the abdominal fat portion more sensitively and can be conveniently applied during the daily use on a toilet seat. Two pairs of electrodes were installed on a toilet seat to provide current and to permit voltage measurement through a thigh-to-thigh current path. The effectiveness of the method was compared with conventional foot-to-foot and hand-to-foot current paths by simulation and by experiments referenced to computed tomography (CT) image analysis. Body impedance using three different current paths was measured, and abdominal CT images were acquired for eight subjects. Measured body impedances were compared with the visceral to subcutaneous fat ratio (VF/SF) calculated from the CT-determined abdominal fat volume. The thigh-to-thigh current path was about 75% more sensitive in abdominal fat measurement than the conventional current paths in simulation experiments and displayed a higher VF/SF correlation (r = 0.768) than the foot-to-foot (r = 0.425) and hand-to-foot (r = 0.497) current paths.

Keywords

Bioelectrical impedance Thigh-to-thigh electrical current path Abdominal body fat Visceral to subcutaneous fat ratio Ubiquitous healthcare 

Notes

Acknowledgements

This work was supported by the ERC program of MOST/KOSEF. (Grant R11-2001-094-03001-0)

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Copyright information

© International Federation for Medical and Biological Engineering 2009

Authors and Affiliations

  1. 1.Interdisciplinary Program, Medical and Biological Engineering MajorSeoul National UniversitySeoulKorea
  2. 2.Department of Oriental Biomedical EngineeringSangji UniversityWonjuKorea
  3. 3.Department of Biomedical Engineering, College of MedicineSeoul National UniversitySeoulKorea

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