NDLI: Effects of short supramaximal exercise on hemorheology in sickle cell trait carriers

Content Provider	Springer Nature Link
Author	Connes, Philippe Sara, Fagnété Hardy Dessources, Marie Dominique Marlin, Laurent Etienne, Frantz Larifla, Laurent Saint Martin, Christian Hue, Olivier
Copyright Year	2006
Abstract	This study compared the hemorheological profile at rest and in response to a short supramaximal exercise test between sickle cell trait (SCT) carriers and a control group. Eight SCT carriers and eight control subjects performed a ramp exercise test on a cycle ergometer conducted to maximal oxygen uptake $$(\dot{V}{\text{O}}_{2{\text{max}}}).$$ One week later, they performed a supramaximal exercise test consisting of pedaling for 1 min at 110% $$\dot{V}{\text{O}}_{2{\text{max}}}.$$ Blood viscosity (ηb), plasma viscosity (ηp), hematocrit (Hct) and red blood cell (RBC) rigidity were assessed at rest, at the end of exercise and at the 15th, 30th and 60th min of recovery. Exercise increased ηb, ηp and Hct above resting values in both groups and these parameters remained higher until the 15th or 30th min of recovery as compared to resting values. RBC rigidity was unchanged from baseline values in both groups during exercise and recovery. No difference was observed between the two groups for ηp and Hct but ηb and RBC rigidity were higher in the SCT carriers at every time point compared with the control group. The higher RBC rigidity and ηb found in SCT carriers at rest and in response to a brief supramaximal exercise might constitute a risk factor for microcirculatory complications. Indeed, a short supramaximal exercise test may not be completely inoffensive for SCT carriers.
Starting Page	143
Ending Page	150
Page Count	8
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	97
Issue Number	2
e-ISSN	14396327
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-02-28
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Exercise Red blood cell rigidity Blood viscosity Hemoglobinopathy Sports Medicine Occupational Medicine/Industrial Medicine Human Physiology
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

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