The Effect of Eccentric Quasi-Isometric and Traditional Resistance Training on Serum Levels of Steroid Hormones in Inactive Men

Document Type : Original Article(s)

Authors

1 Faculty of Sports Sciences, Urmia University, Urmia, Iran

2 Muscle Morphology, Mechanics, and Performance Laboratory, Department of Physical Medicine and Rehabilitation, University of Colorado-Anschutz Medical Campus, Aurora, Colorado, USA

Abstract

Background: Eccentric quasi-isometric training (EQI) is a new method of resistance training. This study is the first to analyze the long-term impact of EQI training on steroid hormones in inactive men compared to traditional resistance training.
Methods: 36 young inactive men were selected voluntarily and randomly divided into three groups: EQI training, traditional resistance training, and control. The conventional and EQI resistance training groups performed the exercise program with an intensity of 60-85% of one repetition maximum for six weeks and three sessions per week. Blood sampling was done in a fasting state 48 hours before the first session and 48 hours after the last session. Steroid hormones were measured using the ELISA method. Two-way mixed ANOVA and LSD post hoc tests were used for data analysis.
Findings: The time x group interaction results indicated that the sex hormone-binding globulin (P = 0.002), dehydroepiandrosterone (P = 0.003), and dehydroepiandrosterone sulfate (P = 0.002) levels had a significant difference. Between-group results showed that EQI and traditional resistance training groups increased steroid hormones compared to the control group (P ≤ 0.05). However, there was no significant difference between the two groups (P > 0.05). Both training groups had a significant increase in steroid hormones compared to the pre-test (P ≤ 0.05).
Conclusion: The present study findings demonstrated that both EQI and traditional resistance training can improve steroid hormones, but there was no difference between the two types of resistance training. Therefore, according to the principle of training diversity, EQI training can be a suitable alternative to traditional resistance training.

Highlights

Kazem Khodaei: Google Scholar, PubMed

Mohammadreza Zolfaghar Didani: Google Scholar,  PubMed

Dustin Oranchuk: Google Scholar, PubMed 

Keywords

Main Subjects

References

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Journal of Isfahan Medical School
Volume 42, Issue 791
3rd Week, January
January and February 2025
Pages 1009-1019

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History

  • Receive Date: 04 August 2024
  • Accept Date: 28 October 2024

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