The Effect of One Cycle Circuit Resistance Training on Plasma Acylated Ghrelin, Insulin and Growth Hormone in Overweight ۱۷-۱۹- Year Old Males

Background and Objective: Appetite monitoring influecnces obesity process. Acylated Ghrelin is an orexigenic peptide that plays an important role in weight controlling and energy homeostatis. The purpose of this study was to determine the effect of one cycle circuit resistance training program on plasma acylated ghrelin, insulin and growth hormone in overweight ۱۷-۲۰ year old males. Materials and Methods: Twenty male students with age ۱۸±۰.۹۲ years old, height ۱۷۴.۵±۵.۰۷ cm, weight ۸۳.۵۷±۵.۶۲ kg and BMI ۲۷.۴۸±۱.۵ kg/m۲ (mean ± SE) were randomly assigned to the experimental and control groups. Subjects performed circuit-resistance training protocol with ۶۰% ۱RM for ۱۲ weeks. The levels of plasma Acylated ghrelin, insulin and growth hormone, were measured by ELISA method before and after ۱۲ weeks. Results: The results revealed no significant differences in body weight, BMI and insulin level (P=۰.۸۳), whereas acylated ghrelin (P=۰.۰۲) and growth hormone (P=۰.۰۴) increased significantly in the plasma. A significant positive correlation (r=۰.۵۸) was found between plasma acylated ghrelin and GH (P<۰.۰۵). Conclusion: It seems that circuit resistance training induces depletion of body energy storage .This issue leads to increase in secration of acylated ghrelin stimulating food intake behavior and compensating for lost energy sources and eventually restoring the body’s energy balance.

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Keywords: Acylated ghrelin ، Insulin ، GH ، Circuit resistance Training ، Overweight