Volume 13, Issue 4 (5-2014)                   ijdld 2014, 13(4): 297-307 | Back to browse issues page

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Jamshidi Khezerlou Z, Ahmadizad S, Hedayati M, Rahmani H, movahedi A. RESPONSES OF VISFATIN AND INSULIN RESISTANCE INDEX TO DIFFERENT RESISTANCE EXERCISE PROTOCOLS. ijdld. 2014; 13 (4) :297-307
URL: http://ijdld.tums.ac.ir/article-1-5214-en.html
1- 1. Department of Exercise Physiology, faculty of physical education and sport science, shahid beheshti university
2- 1. Department of Exercise Physiology, faculty of physical education and sport science, shahid beheshti university , S_Ahmadizad@sbu.ac.ir
Abstract:   (5140 Views)
Background: The aim of this study was to compare responses of Visfatin and insulin resistance index to various resistance exercise protocols. Methods: Ten healthy male subjects performed three resistance exercise protocols including maximal strength (three sets of 5 repetition at 85% of 1-RM with 3-min rest between sets), hyperthrophy (three sets of 10 repetition at 70% of 1-RM with 2-min rest between sets) and strength-endurance (three sets of 15 repetition at 55% of 1-RM with 1-min rest between sets) in three separate sessions. Two blood samples were taken before and after resistance exercise protocol. Responses to different resistance exercise protocols were compared by using repeated measures of ANOVA (3×2). Results: Irrespective of resistance exercise protocol, results showed that plasma visfatin reduced significantly (P<0.05) in response to resistance exercise. Between group comparisons revealed that reductions in visfatin concentration in response to strength-endurance and hypertrophy protocols were significantly higher than maximal strength protocol (P<0.05). Analysis showed that not only glucose, insulin and insulin resistance index did not change in response to resistance exercise significantly, but also there was no significant difference among the responses to different resistance exercise protocols (P>0.05). In addition, there was no significant relationship between changes in visfatin and other parameters (P>0.05). Conclusion: It could be concluded that performing strength-endurance and hypertrophy protocols that cause reductions in visfatin, possibly due to changes in growth hormone during these protocols, could be beneficial in reducing the hyperinsulinemia.
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Type of Study: Research | Subject: General
Received: 2014/09/13 | Accepted: 2014/09/13 | Published: 2014/09/13

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