caa a22 4500 469054107 CHVBK 20180323132838.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF01466277 doi (NATIONALLICENCE)springer-10.1007/BF01466277 Cardiovascular responses in paraplegic subjects during arm exercise [Elektronische Daten] [Rob Binkhorst, Berend Oeseburg, Maria Hopman] Summary: The purpose of this study was to examine cardiovascular responses during arm exercise in paraplegics compared to a well-matched control group. A group of 11 male paraplegics (P) with complete spinal cord-lesions between T6 and T12 and 11 male control subjects (C), matched for physical activity, sport participation and age performed maximal arm-cranking exercise and submaximal exercise at 20%, 40% and 6070 of the maximal load for each individual. Cardiac output (Q c) was determined by the CO2 rebreathing method. Maximal oxygen uptake was significantly lower and maximal heart rate (f c) was sigificantly higher in P compared to C. At the same oxygen uptakes no significant differences were observed inQ c between P and C; however, stroke volume (SV) was significantly lower andf c significantly higher in P than in C. The lower SV in P could be explained by an impaired redistribution of blood and, therefore, a reduced ventricular filling pressure, due to pooling of venous blood caused by inactivity of the skeletal muscle pump in the legs and lack of sympathetic vasoconstriction below the lesion. In conclusion, in P maximal performance appears to have been limited by a smaller active muscle mass and a lower SV despite the higher ϕc,max. During submaximal exercise, however, this lower SV was compensated for by a higherf c and, thus at the same submaximal oxygen uptake,Q c was similar to that in the control group. Springer-Verlag, 1992 Spinal cord injury nationallicence Stroke volume nationallicence Cardiac output nationallicence CO2 Rebreathing method nationallicence Maximal and submaximal exercise nationallicence Binkhorst Rob Department of Physiology, University of Nijmegen, Geert Grooteplein N 21, NL-6525 EZ, Nijmegen, The Netherlands aut Oeseburg Berend Department of Physiology, University of Nijmegen, Geert Grooteplein N 21, NL-6525 EZ, Nijmegen, The Netherlands aut Hopman Maria Department of Physiology, University of Nijmegen, Geert Grooteplein N 21, NL-6525 EZ, Nijmegen, The Netherlands aut European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/1(1992-01-01), 73-78 0301-5548 65:1<73 1992 65 421 https://doi.org/10.1007/BF01466277 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01466277 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Binkhorst Rob Department of Physiology, University of Nijmegen, Geert Grooteplein N 21, NL-6525 EZ, Nijmegen, The Netherlands aut NATIONALLICENCE 700 1- Oeseburg Berend Department of Physiology, University of Nijmegen, Geert Grooteplein N 21, NL-6525 EZ, Nijmegen, The Netherlands aut NATIONALLICENCE 700 1- Hopman Maria Department of Physiology, University of Nijmegen, Geert Grooteplein N 21, NL-6525 EZ, Nijmegen, The Netherlands aut NATIONALLICENCE 773 0- European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/1(1992-01-01), 73-78 0301-5548 65:1<73 1992 65 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer