Accession Number:

ADA285475

Title:

Skin Blood Flow and Bioelectrical Impedance

Descriptive Note:

Final rept. Jul 1989-Sep 1990

Corporate Author:

NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA

Report Date:

1994-06-14

Pagination or Media Count:

20.0

Abstract:

This study was performed to determine the effect of changes in skin blood flow SBF on bioelectrical resistance RES. Twenty-three men had their left hand repeatedly immersed 1 min and removed from water 3 min for a total of 12 min in order to manipulate SBF in the contralateral right limbs where RES electrodes were located. Tests were completed at three water temperatures 5, 15, and 350C in constant ambient air temperature 25 - 1 deg C. SBF was monitored on the middle finger of the right hand using a laser-Doppler flowmeter, and skin temperature on the dorsal right hand Th and foot Tf. Time series analysis revealed cyclic SBF and RES responses were inversely correlated at all water temperatures r -0. 38 to -0. 64 p .05 . T. and Tf were not correlated with SBF for any test. During hand immersion in 5, 15, and 350C water, SBF decreased by 36, 20, and 4, respectively, while RES increased by 3.5, 2.0, and 0.7 ohms, respectively. When incorporated into existing bioimpedance BIA prediction equations, the largest RES difference observed 3. 5 ohms translated into a difference of 0.4 body fat and 0.4 L body water. Changes in SBF of the magnitude observed in this study appear to have a relatively small impact on BIA prediction of body water and composition. Bioelectrical impedance, Skin blood flow, Body composition, Skin temperature, Laser-Doppler flowmetry.

Subject Categories:

  • Personnel Management and Labor Relations
  • Anatomy and Physiology
  • Medical Facilities, Equipment and Supplies

Distribution Statement:

APPROVED FOR PUBLIC RELEASE