The acute effects of resistance exercise on the main determinants of blood rheology
- 1 March 2005
- journal article
- clinical trial
- Published by Taylor & Francis Ltd in Journal of Sports Sciences
- Vol. 23 (3), 243-249
- https://doi.org/10.1080/02640410410001730151
Abstract
The aim of this study was to examine short-term changes in blood rheological variables after a single bout of resistance exercise. Twenty-one healthy males completed three sets of 5 - 7 repetitions of six exercises at an intensity corresponding to 80% of one-repetition maximum (1-RM). The average duration of the exercise bout was 35 min. Venous blood samples were obtained before exercise, immediately after exercise and after 30 min of recovery and analysed for lactate, red blood cell count, haematocrit, haemoglobin, plasma viscosity, fibrinogen, total protein and albumin concentration. Plasma volume decreased 10.1% following resistance exercise. This occurred in parallel with an increase of 5.6%, 5.4% and 6.2% in red blood cell count, haemoglobin and haematocrit; respectively. Plasma viscosity increased from 1.55 +/- 0.01 to 1.64 +/- 0.01 mPa s immediately after resistance exercise before decreasing to 1.57 +/- 0.01 mPa s at the end of the recovery period. Similarly, fibrinogen, albumin and total protein increased significantly following resistance exercise. However, the rises in all these rheological parameters were transient and returned to pre-exercise values by the end of recovery. We conclude that a single session of heavy resistance exercise performed by normal healthy individuals alters blood rheological variables and that these changes are transient and could be attributed to exercise-induced haemoconcentration.Keywords
This publication has 20 references indexed in Scilit:
- The Effects of Graded Resistance Exercise on Platelet Aggregation and ActivationMedicine & Science in Sports & Exercise, 2003
- Behaviour of Mean Erythrocyte Volume During Submaximal Treadmill Exercise in the HorseComparative Clinical Pathology, 2000
- Changes in the fibrinolytic system associated with physical conditioningEuropean Journal of Applied Physiology, 1992
- The possible role of hemorheology in atherothrombogenesisAtherosclerosis, 1992
- Changes in red cell density and related indices in response to distance runningEuropean Journal of Applied Physiology, 1988
- Blood rheology in arterial diseaseClinical Science, 1986
- Plasma volume change during heavy-resistance weight liftingEuropean Journal of Applied Physiology, 1986
- Cardiovascular risk factors and hemorheology: Physical fitness, stress and obesityAtherosclerosis, 1986
- Hemorrheology of Marathon RunningInternational Journal of Sports Medicine, 1985
- Effects of exercise on plasma viscosity in athletes and sedentary normal subjectsClinical Cardiology, 1981