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Background: The effects of acute and chronic exercises on insulin resistance index may be related to one or more factors, including morphological changes and hormonal modifications. The purpose of this study was to investigate the effects of a single session of resistance training on adiponectin levels and insulin resistance until 24 hours post-exercise. Materials and Methods: This experimental study, which followed a pretest-posttest design, was conducted on a group of 10 healthy male volunteers (23±1.4 years) with no history of participation in any regular exercise programs, weight changes more than 2 kg, special diseases, and smoking over the past 6 months that had normal body mass index (BMI) (23.7±1.6 kg.m-2). The subjects performed a single session resistance training (3 sets of 10 repetitions at 75% of 1 repetition maximum). Adiponectin, glucose, insulin, and insulin resistance index levels were measured before and 24 hours after the exercise. Results: There were no significant differences for adiponectin (μ g.ml-1) pre- (6.98±1.9) and post-exercise (8.07±1.4) and glucose (mg.dl-1) pre- (81.3±7.6) and post-exercise (80.7±6.4). However, insulin resistance index pre- (1.34±0.27) and post-exercise (1.06±0.11) and insulin concentration (UΙμ.ml-1) pre-(6.64±0.88) and post-exercise (5.37±0.43) decreased significantly 24 hours post-exercise (P<0.05). Conclusion: Based on the findings of this study, it can be suggested that a single session of resistance training with no significant changes in adiponectin level can have positive effects on glycemic indices in sedentary men.

Keywords: Adiponectin, Insulin resistance, Resistance training

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