caa a22 4500 469054425 CHVBK 20180323132839.0 cr unu---uuuuu 170328e19920501xx s 000 0 eng 10.1007/BF00705094 doi (NATIONALLICENCE)springer-10.1007/BF00705094 Changes in haemorheology in the racing greyhound as related to oxygen delivery [Elektronische Daten] [D. Neuhaus, M. Fedde, P. Gaehtgens] Summary: Arterial blood samples were obtained from six greyhounds during rest, immediately before, and after a 704-m (7/16th mile) race. Measurements were made of various haematological (red cell count, haemoglobin, packed cell volume, white cell count, plasma proteins) and haemorheological variables. Blood and plasma viscosity were determined at high wall shear stresses (67-200 dynes · cm−2, 670-2000 μN · cm−2) in a 20-μm glass capillary device which was designed to take the diameter dependence of blood viscosity (Fahraeus-Lindgvist effect) into account. Compared to values at rest, substantial haemoconcentration occurred before the race, mainly due to splenic discharge of red cells. Additional haemoconcentration was found after the race. The increase of effective blood viscosity caused by elevation of packed cell volume was greater than the increase in O2 binding capacity resulting from the elevated haemoglobin concentration, suggesting that the haemoconcentration observed in the exercising greyhound does not enhance O2 delivery to skeletal muscle. The main physiological effect of red cell discharge from the contracting spleen appeared to be a consequence of the volume rather than the composition of the circulating blood. Springer-Verlag, 1992 Viscosity nationallicence Blood rheology nationallicence O2 delivery nationallicence Haemoconcentration nationallicence Exercise nationallicence Packed cell volume nationallicence Neuhaus D. Institut für Physiologie, Freie Universität Berlin, Arnimallee 22, W-1000, Berlin 33, Germany aut Fedde M. Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, USA aut Gaehtgens P. Institut für Physiologie, Freie Universität Berlin, Arnimallee 22, W-1000, Berlin 33, Germany aut European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/3(1992-05-01), 278-285 0301-5548 65:3<278 1992 65 421 https://doi.org/10.1007/BF00705094 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00705094 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Neuhaus D. Institut für Physiologie, Freie Universität Berlin, Arnimallee 22, W-1000, Berlin 33, Germany aut NATIONALLICENCE 700 1- Fedde M. Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, USA aut NATIONALLICENCE 700 1- Gaehtgens P. Institut für Physiologie, Freie Universität Berlin, Arnimallee 22, W-1000, Berlin 33, Germany aut NATIONALLICENCE 773 0- European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/3(1992-05-01), 278-285 0301-5548 65:3<278 1992 65 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer