The Effect of Eight Weeks of Resistance Training on Activin Receptor type II-B and Plasma Levels of Growth Differentiation Factor 11 and 8 in Cardiac Physiological Hypertrophy in Male Wistar Rats

Document Type : Original Article (s)

Authors

1 PhD Student, Department of Sport Sciences, School of Literature and Humanities, Shahrekord University, Shahrekord, Iran

2 Associate Professor, Department of Sport Sciences, School of Literature and Humanities, Shahrekord University, Shahrekord, Iran

3 Associate Professor, Department of Pathology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

Abstract

Background: Exercise training can be effective on cardiac physiological hypertrophy (that is favorable for cardiac function) by changing the concentration of growth factors and their receptors. The aim of this study was to determine the effects of eight weeks of resistance training on activin receptor type II-B (ActRIIβ), as well as plasma levels of growth differentiation factor 11 (GDF11) and growth differentiation factor 8 (GDF8) in cardiac physiological hypertrophy in male Wistar rats.Methods: After the familiarization period, fourteen 3-month-old male Wistar rats were randomly divided into control and training groups (n= 7). Resistance training included 8 weeks and 5 sessions per week climbing from a 1-meter ladder. GDF11 and GDF8 of plasma were measured using enzyme-linked immunosorbent assay (ELISA) method, and ActRIIB of left ventricular myocardium was measured using immunohistochemistry (IHC) method. Data were analyzed using independent t test and Mann-Whitney U at the significance level of P < 0.050.Findings: There was a significant difference between the training and control groups in heart weight (P = 0.004), heart weight/body weight (P =0.045), GDF11 (P = 0.001), and GDF8/GDF11 (P = 0.015). There was not any significant differences between the training and control groups in ActRIIβ (P = 0.768) and GDF8 (P = 0.295) levels.Conclusion: According to the results of the present study, it seems that resistance training with favorable effects on growth factors is an important strategy in cardiac physiological hypertrophy.

Keywords

References

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Journal of Isfahan Medical School
Volume 36, Issue 502 - Serial Number 502
September and October 2019
Pages 1308-1313

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History

  • Receive Date: 31 July 2018
  • Revise Date: 01 November 2024
  • Accept Date: 06 April 2022

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