The Effect of eight weeks Aerobic Training with Low or High Intensity on Cardiovascular System, Aerobic and Anaerobic Power in Overweight Men
Subject Areas : Physiology of Fitness
Ali Mostafaloo
1
,
Hadi Rohani
2
1 - Assistant Professor in Exercise Physiology, Islamic Azad University, Gonbad & Minoodasht Branch, Gonbad & Minoodasht, Iran.
2 - Assistant Professor in Exercise Physiology, Sport Sciences Research Institute, Tehran, Iran
Keywords: VO2max, overweight, Cardiovascular System, Aerobic exercise, anaerobic power,
Abstract :
The purpose of this study was to the Effect of eight weeks Aerobic Training with Low or High Intensity on Cardiovascular System, Aerobic and Anaerobic Power in Overweight Men. 24 overweight men (weight, 86.3±13.5 kg; age, 24.6±0.3 yrs; VO2max, 29.3±10.3 ml/kg/min) participated in an eight week intervention. The subjects were randomly assigned to each of High Intensity Training [70-80% VO2max] (HI), Low Intensity Training [40-50% VO2max] (LI) and/or Control (C) groups. Exercise training was including running a same distance for both trial groups (isovolumic) with different intensities in each session and three sessions/week. Resting blood pressure and heart rate were measured before and after the intervention. VO2max and anaerobic power were estimated using Cooper and RAST tests, respectively. A significant difference was found between two experimental groups in min power and mean power, but not in max power and fatigue index. Significant changes shown in heart rate from pre to post measurements in both experimental groups which it was grater in HI compare to LI group. VO2max significantly increased in experimental groups but has no significant difference between them. Systolic blood pressure, also, significantly altered in both experimental groups which it was slightly, but not significantly, higher in HI in compare to LI group. However, diastolic blood pressure was unchanged. So, exercise training with high intensity may have more effects on some cardiovascular and anaerobic power parameters in overweight peoples. It seems that aerobic training advantage in relation to aerobic power may not be dependent on its intensity.
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