Role of bioelectrical impedance analysis in acutely dehydrated subjects

S. Dal Cin, M. Braga, M. Molinari, M. Cristallo, V. Di Carlo

Research output: Contribution to journalArticle

Abstract

15 young healthy volunteers were studied to assess the reliability of bioelectrical impedance analysis (BIA) to determine body composition during acute dehydration. Body weight (BW), resistance and reactance measurements were performed before and 4h after a 40 mg intravenous administration of furosemide. BW decreased on average from 69.09 ± 9.83 kg to 67.43 ± 9.72 kg (p <0·001), while resistance, reactance, and phase angle showed significant increases. The individual variations in bioelectrical parameters were not related to the BW loss. Formulae to derive body composition predicted poorly the true water loss (mean individual error: 40% of real loss). The errors in body composition prediction were unrelated to basal percentage of fat free mass, to body mass index, or to BW loss after furosemide administration. In conclusion, BIA proved unreliable in calculating the body composition of acutely dehydrated subjects.

Original languageEnglish
Pages (from-to)128-133
Number of pages6
JournalClinical Nutrition
Volume11
Issue number3
DOIs
Publication statusPublished - 1992

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Body Composition
Electric Impedance
Body Weight
Furosemide
Weight Loss
Dehydration
Intravenous Administration
Healthy Volunteers
Body Mass Index
Fats
Water

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Critical Care and Intensive Care Medicine
  • Endocrinology, Diabetes and Metabolism
  • Gastroenterology
  • Health Professions(all)

Cite this

Role of bioelectrical impedance analysis in acutely dehydrated subjects. / Dal Cin, S.; Braga, M.; Molinari, M.; Cristallo, M.; Di Carlo, V.

In: Clinical Nutrition, Vol. 11, No. 3, 1992, p. 128-133.

Research output: Contribution to journalArticle

Dal Cin, S. ; Braga, M. ; Molinari, M. ; Cristallo, M. ; Di Carlo, V. / Role of bioelectrical impedance analysis in acutely dehydrated subjects. In: Clinical Nutrition. 1992 ; Vol. 11, No. 3. pp. 128-133.
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