Background and Aim: The aim of this study was to make a comparison between the effects of eight weeks aerobic and resistance training on paraoxonase-1, arylesterase activity and lipid profile in obese girls.

Material and method: 30 obese women with mean values for age 30±5years, height 1.60±2m and weight 85.23±6.7kg, and body mass index of 31-33kg/m² were divided randomly into three aerobic exercise (n=10), resistance training (n=10) and control (n=10) groups. Experimental groups performed aerobic exercise on treadmill between 60 to 75% of heart rate reserve and resistance training between 55 to 75% 1RM for 8 weeks. Blood samples were taken from the subjects 48 hours before and 48 hours after training and also after 12 hours of fasting. Data were analyzed by use of ANOVA and Tukey post hoc test. P≤0.05was considered significant.

Results: The results showed that aerobic exercise had a significant effect on serum concentrations of paraoxonase-1 (P=0.001) and arylesterase (P=0.006) in obese girls. However, there was no significant difference between the effects of eight weeks of aerobic and resistance training on the plasma levels of cholesterol, triglycerides and LDL in obese girls (P≤0.05). Also, the results showed that plasma HDL levels significantly increased after eight weeks of aerobic training in obese girls (P=0.007). The effects of eight weeks of aerobic and resistance training on plasma VLDL level, were significantly different from those of the control group (P=0.001).

Conclusion: According to the results of this study, it seems that aerobic exercise can increase paraoxonase-1 and arylesterase plasma levels and also modify lipid profile which can result in reduced risk of cardiovascular diseases in obese people.

Key words: Obesity, Aerobic training, Resistance Training, Paraoxonase-1, Arylesterase.

Received: Jan 29, 2016      Accepted: Jun 6, 2016