Central hemodynamic response to interval aerobic jogging in healthy male students
AbstractPurpose Regular training improves maximal oxygen consumption (VO2max) and cardiovascular function. The aim of this study was to determine the central hemodynamic adaptation after interval aerobic jogging in healthy male students. Methods Twenty untrained male students (aged 18-20 years) were volunteered and randomly divided into two groups: interval (I; n=10) and control (C; n=10). Countryside interval jogging programme 5×9 min at 70% of Maximum Heart Rate interspersed with 4 min inactive recovery, 3 days/week for 8-weeks performed. The control group remained sedentary during the period. VO2max obtained using the step-test. Standard medical method of tetrapolar chest reography (impedance cardiography) was performed for hemodynamic parameters, during resting and after workload (Step-test) conditions, before and after the training. Results Using t-test, after eight weeks the resting heart rate in both groups did not change significantly (P>0.05). The stroke volume increased significantly in I group after workload (P≤0.05). The cardiac output (CO) did not change significantly in both groups (P>0.05). The systolic blood pressure in I group decreased significantly at rest and after workload (P≤0.05). The diastolic blood pressure did not change significantly in both groups (P>0.05). The systemic vascular resistance in the both groups did not change significantly (P>0.05). The maximal aerobic capacity absolute and relative increased significantly in I group (P≤0.05). Significant difference between groups in stroke volume, cardiac output, VO2max absolute and relative (P≤0.05) was found. Conclusions. Eight weeks aerobic interval jogging can influence on central hemodynamic and VO2max in male students.
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