Hitosugi M, Niwa M, Takatsu A
Department of Forensic Medicine, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Tokyo 105-8461, Minato-ku, Japan.
Thromb Res. 2000 Dec 1;100(5):409-12. doi: 10.1016/s0049-3848(00)00348-0.
We examined blood rheologic changes, mainly blood viscosity, during long-term quiet sitting. Samples of blood were obtained from the arm and foot veins of the healthy adult male volunteers before and after 2 h of quiet sitting. Blood viscosity, was immediately determined with an oscillation viscometer, and blood count and blood chemistry were analyzed. We found that the viscosity in blood from a foot vein but not from an arm vein increased significantly after 2 h of sitting. Our results show that 2 h of quiet sitting can increase thrombotic tendency locally in the leg but not systemically and suggests the importance of measuring focal venous blood viscosity.
