지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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In order to measure the segmental impedance of the body, a bioelectrical impedance measurement system (BIMS) using multi-frequency applying method and two-electrode method was implemented in this study. The BIMS was composed of constant current source, automatic gain control, and multi-frequency generation units. Three experiments were performed using the BIMS and a commercial impedance analyzer (CIA). First, in order to evaluate the performance of the BIMS, four RC circuits connected with a resistor and capacitor in serial and/or parallel were composed. Bioelectrical impedance (BI) was measured by applying multi-frequencies -5, 10, 50, 100, 150, 200, 300, 400, and 500 KHz –- to each circuit. BI values measured by the BIMS were in good agreement with those obtained by the CIA for four RC circuits. Second, after measuring BI at each frequency by applying multi-frequency to the left and right forearm and the popliteal region of the body, BI values measured by the BIMS were compared to those acquired by the CIA. Third, when the distance between electrodes was changed to 1, 3, 5, 7, 9, 11, 13, and 15 cm, BI by the BIMS was also compared to BI from the CIA. In addition, BI of extracellular fluid (ECF) was measured at each frequency ranging from 10 to 500 KHz. BI of intracellular fluid (ICF) was calculated by subtracting BI of ECF measured at 500 kHZ from BI measured at seven frequencies ranging from 50 to 500 KHz. BI of ICF and ECF decreased as the frequency increased. BI of ICF sharply decreased at frequencies above 300 KHz.
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참고문헌 (22)
참고문헌 신청
A. De Lorenzo / 1995 / Improved prediction formula for total body water assessment in obese women / International J. of Obesity and Related Metabolic Disorders : 535 ~ 538
A. Thomasset / 1962 / Bio-electrical properties of tissue impedance measurements / Lyon Med. 207 : 107 ~ 118
B. E Lingwood / 1999 / Biomedical applications of electrical impedance analysis / Proc. Of ISSAP 1 : 367 ~ 370
B. H. Cornish / 1993 / Improved prediction of extracellular and total body water using impedance loci generated by multiple frequency bioelectrical impedance analysis / Phys
E. C. Hoffer / 1969 / Correlation of whole-body impedance with total water volume / J. Appl. Physiol. 27 : 531 ~ 534
A. Thomasset / 1962 / Bio-electrical properties of tissue impedance measurements / Lyon Med. 207 : 107 ~ 118
B. E Lingwood / 1999 / Biomedical applications of electrical impedance analysis / Proc. Of ISSAP 1 : 367 ~ 370
B. H. Cornish / 1993 / Improved prediction of extracellular and total body water using impedance loci generated by multiple frequency bioelectrical impedance analysis / Phys
E. C. Hoffer / 1969 / Correlation of whole-body impedance with total water volume / J. Appl. Physiol. 27 : 531 ~ 534
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