Effects of exercise on rheological and microcirculatory parameters

Citation
K. Nageswari et al., Effects of exercise on rheological and microcirculatory parameters, CL HEMORH M, 23(2-4), 2000, pp. 243-247
Citations number
15
Categorie Soggetti
Hematology,"Cardiovascular & Hematology Research
Journal title
CLINICAL HEMORHEOLOGY AND MICROCIRCULATION
ISSN journal
13860291 → ACNP
Volume
23
Issue
2-4
Year of publication
2000
Pages
243 - 247
Database
ISI
SICI code
1386-0291(2000)23:2-4<243:EOEORA>2.0.ZU;2-Z
Abstract
The physiological changes occurring during exercise and its possible conseq uences have been receiving considerable attention lately. In this paper, we studied the changes in hemorheological and microcirculatory parameters, be fore and after the exercise, in the subjects undergoing mild exercise (n = 20). A cycle ergometer adjusted at 2.5 kilopounds was used for 15 minutes. The whole blood viscosity showed a significant increase after exercise at a ll shear rates (0.512-51.2/s) except at the high shear rate (94.5/s). Howev er, the significant level was more (P < 0.005) at low shear rates (0.512-4. 39/s). A significant elevation in plasma viscosity was observed after the e xercise (P < 0.0008). Red cell rigidity showed a significant increase after the exercise (P < 0.001) while red cell aggregation and hematocrit failed to show any significant change. Microcirculatory studies showed a significa nt increase in the basal perfusion level after exercise (P < 0.0002) when c ompared to the resting state value. There was a significant decrease in rea ctive hyperaemia perfusion index after exercise (P < 0.0007). Hence, it is evident from this study that short-term exercise significantly alters hemor heological and microcirculatory parameters.