Eur J Endocrinol
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DOI: 10.1530/EJE-07-0223
European Journal of Endocrinology, Vol 157, Issue 5, 625-631
Copyright © 2007 by European Society of Endocrinology
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CLINICAL STUDIES

Effects of resistance versus endurance training on serum adiponectin and insulin resistance index

Sajad Ahmadizad1, Amir Hossein Haghighi and Mohammad Reza Hamedinia

Department of Sports Sciences, Tarbiat Moallem University, Sabzavar, Iran
1 Department of Sports and Exercise Physiology, Faculty of Sports and Exercise Sciences, Shahid Beheshti University, Tehran, 198396 3113, Iran

(Correspondence should be addressed to S Ahmadizad Email: sahmadizad{at}yahoo.com)

Purpose: The purpose of the present study was to investigate the effects of resistance and endurance training on serum adiponectin and insulin resistance index (SI) in healthy men.

Methods: Twenty-four healthy males (age, 35–48 years) participated in the study. The subjects were randomly assigned to one of three groups: endurance training group (n=8), resistance training group (n=8) and control group (n=8). Blood samples were taken in fasting state from all subjects. The experimental groups performed either endurance or resistance training 3 days a week for 12 weeks. The endurance training programme included continuous running at an intensity corresponding to 75–85% of maximal heart rate, while resistance training consisted of four sets of circuit weight training for 11 stations and at an intensity corresponding to 50–60% of one-repetition maximum. The maximum numbers of repetitions in each station was 12.

Results: There were significant negative correlations between serum adiponectin and body fat percentage, waist-to-hip ratio, body mass index and the insulin resistance index at baseline, whereas changes in response to training were not significantly correlated. Both endurance and resistance training resulted in a significant decrease in the SI in comparison with the control group. However, serum adiponectin did not change significantly in response to resistance and endurance training.

Conclusion: Endurance and resistance training caused an improvement in insulin resistance in healthy men, but this improvement was not accompanied by increased adiponectin levels.






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