The Effect of Six Weeks of High Intensity Interval Training on Hemorheological Variables of Non-Athlete Young Men

Hemorheology is the science of flow and deformation of blood in the vessels against the imposed forces and pressures. Different physical activity can cause different rheological changes. So the aim of this study was to investigate the effect of 6 weeks of high intensity interval training on hemorheological variables in non-athlete young men. For this purpose, 18 non-athlete males were voluntarily selected and randomly divided into training group (age 23.2±2 yr, weight 67.2±7.2 kg, height 180±6.8 cm) and control group (age 24.3±1.4 yr, weight 72.2±6.5 kg, height 176.2±4.9 cm). The training group performed high intensity interval training protocol for 6 weeks and 3 sessions per week. To measure hemorheological variables, before and after 6 weeks of high intensity interval training, blood samples were collected in the fasting state. To test the hypotheses of the research, paired t test and independent t test were used (p<0.05). Results showed that resting levels of hemoglobin, red blood cells count, hematocrit, whole blood viscosity, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration and platelets after 6 weeks of high intensity interval training significantly (p<0.05) decreased in the training group. Mean corpuscular volume and plasma volume changes in the exercise group increased significantly (p<0.05). It can be concluded that high intensity interval training can improve some hematological variables that affect whole blood viscosity and treat and prevent some diseases related to these variables.