چکیده:
Purpose: The wide prevalence of obesity and associated diseases around the world, makes identifying a method to reduce its risk factors and the complications in obese individuals an important area to research. The present study examined the effect of 8 weeks of aerobic exercise on the plasma visfatin and lipid profile of overweight women. Materials and Methods: 19 overweight females (mean age, 22±1.85 years, weight 77.4 ±10.35 kg, body mass index, 30.3±4 kilograms per square meter, waist to hip ratio 0.85±0.04 and fat percent 33.9±3.35) volunteered to participate in the study and were randomly divided into 2 groups. 9 subjects were assigned to
the aerobic training group (training 5 sessions per week, for 8 weeks. The first week began with the 65 percent of maximum heart rate reserve (HRR) and reached 80 percent of HRR in the eighth week). Ten subjects were assigned to the control group. Blood samples were collected at the beginning and end of the research to determine the changes in plasma visfatin levels and the lipid profile of the participants. Dependent and independent T-tests were used to analyze the data(P≤0.05). Results: The T-test results showed that plasma visfatin and HDL levels significantly decreased (p=0.01), while TG levels increased significantly in the experimental group (p=0.03). The weight and body mass index of the experimental group were significantly lower compared to the control group (p≤0.05). Other variables recorded did not change significantly in the groups.
Discussion and Conclusion:Training-induced weight loss and the eventual changes in the body
composition of the experimental group had an important role in reducing the visfatin plasma levels.
خلاصه ماشینی:
"Key words: Aerobic exercise trainig, Visfatin, Overweight women, Lipid profile Introduction Obesity, is one of the most common metabolic diseases is the most important threat to health, because it increases the risk of metabolic disorders, including type 2 diabetes, increased fat accumulation in different parts of the body, high blood pressure, cardiovascular diseases and cancer [1].
In the study by George et al (2011), 12 weeks of three different training protocols: aerobic, resistance and a combination of both (3 times a week, 60 minutes each session) in patients with type 2 diabetes, increased visfatin levels, but there was no significant differences between the training groups in this regard.
In another study the effect of aerobic, resistance and combined training (12 weeks of aerobic training, 45 minutes per session, with an energy cost of 300 kilocalories per session, and resistance training, 20 minutes per session, with an energy cost of 100 kilocalories per session, 5 times a week) were examined on plasma levels of 50 to 55- year old, overweight, non-diabetic women, and the results showed that visfatin levels decreased significantly after 12 weeks of training [5].
Based on our results, weight loss, body mass index, improved lipid profiles, and insignificant reduction of visfatin after 8 weeks of aerobic training represents physical activity as an effective strategy in dealing with obesity, overweight and their related complications."